Get a Machinist's Handbook and look up the proper feeds and speeds
@NithinJune
Жыл бұрын
this is old i think, i’m pretty sure this dude is like a machining expert by now
@NithinJune
Жыл бұрын
i think he literally has a 5 axis machine
@Jrez
Жыл бұрын
@DarthNithin Fair enough, it just came up in my #shorts feed and it takes an extra click or two to reach the video description so I check things like that very little compared to normal videos. Still, the comment is also for other potential viewers who are new to making/fabricating/machining or w/e.
@hydroxide5507
Жыл бұрын
formerly chucks
@court2379
Жыл бұрын
That isn't the issue. It's the design of the machine and that he is climb cutting. Switch that and then evaluate the speeds and feeds. But know, the values it states are the ideal numbers. They assume a rigid setup, good chip evacuation, good cooling, and enough power. In the real world you often need to run 1/2-1/4 the ideal speeds due to deficiencies in the above. Cooling usually being the biggest problem unless flooded.
@brionthomsen7479
Жыл бұрын
you are feeding the wrong direction--always feed left to right---the chattering is caused by the bit trying to climb the wall
@frp1276
Жыл бұрын
If only things were that simple.
@ferrumignis
Жыл бұрын
Climb milling is perfectly fine provided your machine is rigid enough for the depth of cut and doesn't have a ton of backlash.
@-8_8-
Жыл бұрын
Probably correct as this is a desktop mill and probably has the gibs of a knee mill. But on a CNC you typically climb mill.
@joshuakuehn
Жыл бұрын
@@ferrumignisyeah if his machine was more rigid climb milling would work but if it's a home gamer system it's probably not that rigid
@DaveBlais
Жыл бұрын
Ferrum Ingnis is right. If the machine isn't really rigid, conventional milling is the best and climb milling is best avoided. Also, tired endmills should be used on softer materials. A coral end mill for your roughing might help?
@MorRobots
Жыл бұрын
Don't climb mill on a desktop CNC at low spindle speeds and aggressive feeds. Tune feeds and speeds with conventional milling and your spindle absolutely ripping fast. Then step the feed up as you drop the spindle speeds. You will find a sweet spot where the two meet and you get perfect chips. Then find the relationship between that point and how much you can decrease speed and increase steps while maintaining similar performance. Then convert to linear speed and your overall tool engagement. Congratulations, you now have your default starting point for all new tooling in that material while doing conventional milling.
@jeremyjohnston9120
9 ай бұрын
dude he is machining steel not aluminum, you want lower spindle speed, not "absolutely ripping fast"
@charmzee8749
9 ай бұрын
This is the proper way .
@charmzee8749
9 ай бұрын
@@jeremyjohnston9120Um…not really depends on the factors. For a strong machine you are right but for a puny desktop one or a conventional cnc…f no you will burn tools faster . You need to find the sweet spot and you can find that by having a fixed feed let’s say 1000 mm/min and a 2400 rpm , start cycle at around 50-100 and gradually increase it until the chips fly nicely then you make the ratio . This method prevents you from having stuck plastic/Aluminium chips from sticking to the tool, prevents early wear in steel, prevents breaking pieces in cast iron , prevents premature axis wear and so much more.
@jeremyjohnston9120
9 ай бұрын
@@charmzee8749 no. Machinery handbook
@lonewolftech
8 ай бұрын
@@jeremyjohnston9120it’s a weak ass machine… less feed more speed.. they aren’t even designed for steel.. nothing in it is even steel accept the collet and end mill..
@justsomeguyoverthere8002
Жыл бұрын
It looks like you're feeding it the wrong way. You need to feed in the opposite direction of rotation. From the clip of the first pas you need to go from left to right, not right to left. Your bit is pulling itself along and that's what's causing your chatter. This is called climb cutting which is only really useful for finishing passes when very little material is being removed. The reason the hole cut has less chatter is due to it being a traditional cut instead of a climb cut.
@zechbaker6970
Жыл бұрын
No climbing millings is the recommended industry stand for cnc Milling, and the the pocket he does is also a climb milling path
@paudan1284
Жыл бұрын
@@zechbaker6970 yeah but this machine obviously can't handle it. either too much backlash w/ no eliminator or it's just weak.
@maxmaynard1596
Жыл бұрын
@@zechbaker6970 Yeah, industry standard. If you'll forgive a bit of wordplay, I don't think they make imdustrial desktop mills.
@jamescrud
Жыл бұрын
It won't make much difference. All the chatter is mostly because his frame is simply not rigid enough. They entire spindle and frame is bouncing around because of the forces involved.
@mastmec
Жыл бұрын
Looks like your cutting the wrong direction.
@willrandship
Жыл бұрын
oh, you weren't trying to knurl the piece?
@assassinlexx1993
Жыл бұрын
He was going for better gription ;)
@peglegjim57
10 ай бұрын
I’m old, and don’t know if it’s still done this way, but “back in the day”, my co-worker (from Switzerland) said he had to hand file every type of metal(s) in their machine shop for TWO YEARS before he was allowed to run a machine. It was the standard apprentice training process of the entire region. “We have an intimate knowledge of the properties and personalities of every metal, long before we lock it down on a machine.” He was the best machinist I’ve ever known.
@Neoprenesiren
Ай бұрын
That’s a moronic requirement.
@kugelblitz1557
Ай бұрын
That's how my mentor was trained. I'm somewhat the same. I clean, sweep, deburr, and saw cut. When I run out of that I get to watch people run the machines, do the math for them, and press the go button. That way I learn the stuff like "always set your tool offset from a fixed point" the easy way.
@briankelly7738
Жыл бұрын
RPM and feed direction. That should help a ton.
@bryceg5709
Жыл бұрын
1st step is check your spindle run out. Such endmills need as close to no run out as possible.
@bobelkiniii1461
Жыл бұрын
That ER tool holder will spin super true as long as he has the right collet
@bryceg5709
Жыл бұрын
@@bobelkiniii1461 right if it's a good tool holder a good collet everything snuggled up etc. Still good practice then to check run out. I've had some where you needed to clock the collet just right and some end mills are crooked. But the smaller the end mill the less tolerant to run out. You could have several thousands on a half inch but if your running little tiny end mills they need to be darned near 0.
@konkon7767
Жыл бұрын
Congratulations, you've learned that Climb Milling is not for hogging out material. It's for a very light cut to produce a smooth, final cut finish.
@Caseman91291
10 ай бұрын
Depends on your setup and tooling.
@Peron1-MC
10 ай бұрын
@@Caseman91291indeed and this setup and tooling is not for that clearly.
@dambroangling2828
9 ай бұрын
Actually that's only for a Manual mill. CNCs are the opposite. You almost only climb cut with CNC, and rarely with manual.
@drakebletl7754
Жыл бұрын
It's climb cutting versus conventional cutting. Conventional cutting feeds right to left or against the cutting edge so the blades are pushing material toward the cut. This style of cut is used on manual cnc machines like Bridgeports. When using any automatic cnc machine you climb cut the material left to right and maintain a constant feed of coolant for a nice finish. I hope this helps in your future videos.
@ReactionTime344
Жыл бұрын
Don't you have a 5 axis machining center now? Crazy to see how far you've come
@BreakingTaps
Жыл бұрын
Haha yep! Quite a step up from this old desktop CNC :) Hoping to get some more machining content on the channel in the future, it's too neat of a machine to not show off sometimes :)
@dannydetonator
Жыл бұрын
@@BreakingTapsYou're living a dream of mine. Thank you, inspirational.
@hitmonkey2984
9 ай бұрын
"well it didn't like that" The number of times I've heard or said that on a fresh program. Lol
@skurtov
Жыл бұрын
The tools should come with optimum settings for the material being cut from the manufacturer. Try taking smaller cuts in and use less radius of the tool. Where's your lubricant?
@netherialdreyrimani
Жыл бұрын
depends on the material, different types of steel, different metals in general have different speed and feed rates for different heads depending on the number of cutting surfaces and the diameter of the endmill. Hell even the maximum rpm of the machine you are using goes into factoring the speed and feed rate you should use for it.
@netherialdreyrimani
Жыл бұрын
you also dont need lubricant for end milling generally, but you CAN if you want to.
@bliviont
Жыл бұрын
Yeah climb milling in the wrong direction will make everything worse. Like everyone else has said, feed against the rotation of the bit.
@TritonTv69420
8 ай бұрын
(3.82 x 300 to 800) / tool diameter Take that number then multiply by n (flutes) x .001 to .0075 or more depending on what the machine can handle and your ratial engagement.
@JesseHughson
Жыл бұрын
Some of those cuts were looking pretty good
@shwathekid
Жыл бұрын
Don’t know what you should do as I don’t know shit bout this but it looks dope 😂🙌🏽 keep it up
@tophatvideosinc.5858
Жыл бұрын
Have you tried keeping to the optimal speeds and feeds of your mill but program in a reverse finishing pass? Taking a cut in the same direction the tool is spinning (like a wheel on pavement) makes for a very decent finish. Say you want to just make a square that is 1" and you have a billet that is 2 inches. You start normally, keeping to your speeds and feeds (minor adjustments for longevity of the machine and tool if needed) but otherwise ignore the quality and chatter. But once you get within a tenth of the part, make your last 2 passes shallower and slower. One being .05" and the other .045" if possible with your tool. Then the finishing pass can be done counter to the pathing orientation at 0.05" (in Anoka tech I was taught the term "walking off the chatter"). Of course these measurements are just made up and most of the time with accurate dimensions you'll be working in thousandths or even thoudths for finishing passes let alone hundredths. The same method applies, sneak up on the finish. This can be hard on machine that dont have ballscrew leads if you take heavier cuts. You probably know more about this than I do since you've likely learned everything I have and been around long enough to apply it professionally. I only went to school for 4 years for metrology, cad, machining and mechanical engineering and haven't been around long enough to apply what I've learned to great effect yet.
@avocadoarms358
Жыл бұрын
Please do this again but actually cut a part out, I’d really like to see how it goes even if it’s slow, the more access we can give makers to make new stuff the better
@fightme5543
Жыл бұрын
Climb-milling buddy! Keep in mind you want your cutter to pull into your workpiece, not push away from it like that!
@kevinmerai6092
11 ай бұрын
I think using a coolant would help improve the quality of the cuts and the longevity of your bit
@240sxRule
10 ай бұрын
Climb milling is fine. Especially with a solid carbide endmill. If anything it takes less energy and is more efficient. Its just the feed.
@2098662
Жыл бұрын
The rotation of the bit is clockwise. Running left to right causes the bit to cut into the piece. Right to left will make the bit far less efficient and more likely to skip, bind or go off course entirely. Thanks for the knowledge eddy. (Cnc coworker)
@canonicaltom
Жыл бұрын
There's a reason the Avid CNC and other CNC routers are not CNC mills and not rated for ferrous metals. The spindle speed can't be set low enough to cut steel properly. But as you've found by experiment, it's certainly possible to rub the steel off at high speed without really cutting.
@wolf310ii
11 ай бұрын
It has nothing to do with the spindle speed, these routers are just not rigid enough
@canonicaltom
11 ай бұрын
@@wolf310ii Having milled steel on a Sherline, I can tell you that rigidity is not the most important part of the equation.
@wolf310ii
11 ай бұрын
@@canonicaltom Yes it is, more than RPM and a Sherline is far more rigid than a CNC-router
Try feeding in the right direction. The chips should be coming off of the front leading edge of the cut not off of the trailing edge.
@NickyDoyle
11 ай бұрын
This issue without seeing the machine build but this looks like the axis are not rigid enough. When the load is low key when high rpm or low feed it will be ok but once you push it will will climb and jump
@thereasoninlifeisthatthere5326
Жыл бұрын
Try to use conventional milling instead of climbcutting.
@itsamepersonio7338
6 ай бұрын
I thought this said a tabletop Civic and I was wondering why anyone would want a paperweight Honda
@brandonmccaskey9337
Жыл бұрын
For such a light spindle in steel you'll have to cut the opposite direction. It's pulling the machine into the cut because of the cutting forces instead of forcing the cutter through the material
@ThielVision
Жыл бұрын
You can get feeds and speeds from the company you bought the tooling from
@BloodThunda
11 ай бұрын
A word to the wise, if you are struggling with chattering like that, you did it the wrong way around, you actually want to decrease the spindle speed and increase the feedrate. Chattering is causes by vibrations and the tool is literally bouncing off the steel. You want to put more pressure on the tool so it is not allowed to start bouncing. Less spindle speed means less vibrations as well.
@favorisofmyname
10 ай бұрын
In case you have a frame not stiff enough or steppers or motor not strong enough ( which looks like that), you should mill always counter clockwise.
@garywemmer9342
Жыл бұрын
Also helps to have coolant.
@beinganangeltreon
Жыл бұрын
This might improve CNC milling. I recently saw a youtube short about how a big magnet swung towards a piece of aluminum had a sudden slowdown right next to the akuminum from eddy current magnetic repulsion caused from magnetic damping. putting a nonferrous, or ferrous chunkt washer at what I think of as the connector to the spinny part, kind of like a chuck, and then putting a toroidal magnetic winding next to the chuckish thing would cause back and forth motion or cyclic oscillation of the cutting head to be greatly magnetically dampened, minimizing cut variability from being more on true. a nice bonus would be computer measurement of unpreferred vibration with dynamic adjustment to least vibration at each batch of identical machined parts. stuff would come out better, and cutting might be faster. Its as cheap, and kind of like a monochrome TV beam steering coil.
@DevS25
Жыл бұрын
Okay Step 1: Let the coolant flow in the area being cut.
@ARM0RP0WER
Жыл бұрын
looks like its either air cooled because of the air blowing away the cuttings or there is none
@solentshredders7929
10 ай бұрын
That's what I was thinking 😂 you shouldn't cut hard metals or it will do exactly the problems he's having!!!
@Brap_Lord
10 ай бұрын
Feed direction is wrong, also for a desktop end mill you could try a higher feed rate if you shaved off less each pass- ex: twice the feed rate but cutting half the thickness would do it in the same amount of time, but with it not being a full sized CNC then this would prevent the motor from bogging down and drawing more amps than you would want, which would also save your bit as well. This may not work with steel idk, I’ve mainly ran a router in wood, plastic, and aluminum, haven’t done any steel
@cheifDeisel
Жыл бұрын
As others have said your feed direction is an issue and it may seem counterintuitive but often times we would slow our RPMs and up our feed. Depending on the material that you're cutting, taking bigger bites will help you stay in front of the work hardening. If you think about it if you are feeding at all your leading edge is always striking your material so if you're not taking as much each time then your leading edge is striking the material far more times over the course of a part than it would if you'd just let it eat.
@jeepmanxj
Жыл бұрын
In general with a machine that's not super rigid you want to conventional mill, not climb mill. Try a lighter side cut, or take half of the depth and see what you get.
@Depth_of_Cut
Жыл бұрын
Looks like it's not ridgid enough for climb cutting or there is backlash in the lead screw. Try going the opposite direction if it goes away then its one of the above. If it's still there then the spindle bearings are too loose or the spindle is just too flimsy for that depth of cut.
@OLDSKUULGARAGE
10 ай бұрын
You are feeding in the wrong direction or what is known as climbing. Using a proper endmill for the depth of cut is needed too. Every cutting edge has a specific depth of cut.
@oogaboogaman0046
9 ай бұрын
finally, someone with a relatable channel name
@corysnyder5862
Жыл бұрын
Try changing the direction of cut, also make sure you are using the right endmill. There is a conventional cut and a climb cut where the flutes are reversed
@desertpunk6705
Жыл бұрын
You can’t just try stuff. You need to know your material, endmill material, endmill coating, flute count, power of your spindle, calculate your surface footage, calculate your chip load with any chip thinking, calculate your power requirements for the cut. Kenna metal has a good engineering calculator on their website. Don’t just try stuff
@chrislea8239
Жыл бұрын
Been there done that. Same problem on a cnc router. All to fast ! Or use a buttload of coolant and then you'll struggle. Or have a fist full of end mills or slot drills.
@shawncollins1239
10 ай бұрын
It’s pretty obvious when having a rough timing cutting better to turn up the rpm and slow the feed rate idk why that is such a hard concept.
@mannyvee
Жыл бұрын
You should try conventional milling instead of climb milling. Climb milling generates higher forces and is unforgiving on machines that are not rigid enough. Of course there are many factors involved but unless you have very heavy duty steppers it will likely never be rigid enough to climb mill steel.
@boldsword1
Жыл бұрын
Rigidity/ backlash Need to dampen the spindle movements
@outerthoughts30
Жыл бұрын
Try using surface feed. Or using a small step over at full length of the endmill. Maybe use a chip per tooth. Or. Idk. Open a machinist handbook or something
@connordupuy8462
Жыл бұрын
Look up the difference between climb milling and conventional milling. They have various differences that might be causing your problems.
@Kingkoopa00
Жыл бұрын
You are climb milling. You can't really do that on run-of-the-mill CNCs for deep cuts. You need to conventional mill for roughing/deep cuts, and climb mill for very very light finish passes.
@billhamilton2366
Жыл бұрын
You could run the feed against the rotation of the end mill instead of with the rotation of the end mill. You will get a better finish if you feed left to right
@shoktan
10 ай бұрын
If you don’t have a rigid machine, never climb mill. The tool will want to dig into the material and “pull” the table along with it. I’ve seen this happen on a Bridgeport when someone was climb milling tool steel. The end mill “grabbed” the part and the the whole table was yanked to the right by several inches.
@blakeengland7784
7 ай бұрын
Your bit is climbing whenever your feeding from right to left, and if you can take that much meat without breaking bits or spindle, youve got yourself a real workhorse for your small projects
@NA-oq4ty
10 ай бұрын
Just read my previous post and my speech recognition made a mess out of it. You can't move the mill in the direction that the chip out is going. It makes the mill chatter the way you observed. Also I observed that you reversed the direction you were operating the mill when you were making the circle cuts. Keep this in mind. Planned ahead. Work carefully.
@aceofdiamounds
Жыл бұрын
Looks like climb milling, feed into the other direction so the milling bit isn't trying to climb up the material
@WCGwkf
Жыл бұрын
Depth of cut is your issue (stepover and length of cut). You obviously know about feeds and speeds and how to play with it. Such a light machine you're very limited to how much tool engagement you're allowed. My guess is you're going to be limited to .005 or .010 depending on flute length engagement. You can't just say "feeds and speeds" and ignore the machines capacity of rigidity and torque.
@johnjon4688
9 ай бұрын
Oosh. There is a ratio you need to follow for bit size, number of flutes, bit composition, type of cutting edge, and material being cut. Rpm and feed rates. Also, direction of cut depends on cut method and the material.
@1ftintheflames
5 күн бұрын
Mild or plate steel is a high rpm and slow feed rate. Stainless because of the grain is basically the slowest speed feed rate you can run. Aluminum is a diff story. Cuts like butter and feed rate can basically be as fast as if your cutting mdf.
@KittMonsta
Жыл бұрын
You know that there are tables for this so you don't need to try and error. You can calculate it.
@ipadize
Жыл бұрын
the endmill would be capable of much more sideload, but your machine does not. Thats why the endmill broke. Also climb milling is the way to go on CNC machines with ballscrews. Only manual machines you should do conventional milling so that the endmill doesnt pull the table because of the slop in the leadscrews and breaking the endmill or scrapping the part. Climb milling is better for the tool because it is rubbing less than conventional milling.
@ryancasey4807
Жыл бұрын
You need to look up the difference between climb milling versus conventional milling
@lazyofficial3552
Жыл бұрын
Do Americans actually know that there’s cutting value tables ? You can actually calculate what the best speed + RPM is by knowing wich steel, wich cutter (material) and what diameter (cutter) you’re using….. at least that’s what machinists in Germany do 😅
@Richard-v5r
8 ай бұрын
Should climb mill on steel when using carbide tooling. Try smaller fast step overs. 10% of cutter diameter. 6mm = 0.6mm stepover.
@lateatday9826
9 ай бұрын
Climb milling with low rigidity will cause that try conventional milling should get much better results
@vortextube
Жыл бұрын
You can look this up in books. Your feed and rpm are way high and you should only be conventional milling on machines like this.
@joiki7
9 ай бұрын
U need to lower the side cut percentage, 4-8% of the mill diameter in side cut when using full length of mill
@EnlightenedSavage
10 ай бұрын
climb milling isn't as easy as standard. outside of that you definitely have some stability issues, I would check that everything is tight.
@jamestarbet9608
Жыл бұрын
Rate of feed, depth of cut (both vertical and horizontal), spindle speed, spindle rotation direction, direction of cutting movement. That was painful for the mill, and for us.
@korieharris4086
10 ай бұрын
#1 climb cutting can cause tool chatter, #2 a little coolant goes a long way, #3 het yourself a copy of machinerys handbooks volume 24, it's gonna have all your speeds and feeds for different tooling and materials
@biowaste179
Жыл бұрын
if your machine has backlash control, you can do a climbing cut like in your video, but if not, conventional milling would be better. conventional milling removes backlash but you lose surface quality
@theoriginalbeanboy
10 ай бұрын
you're doing what is known as uphill machining, its not great for taking bigger cuts unless the machine can handle it (yours cant) try feeding the other way, and take smaller cuts to start, if that doesnt help, go slower, i mean literally feed slower not turn down RPM, just dont leave it in the same spot for too long
@i_critique_your_vanity7216
Жыл бұрын
Cnc has lots of simple math involved in order to get good results. Maybe find an online calculator that will take your inputs if you don’t want to do the math manually
@cetyl2626
10 ай бұрын
Rule number one with machining: make your machine a rigid as possible. Way more than seems intutative. A relatively light machine will vibrate. In other words your chatter is almost certainly due to the machine. Taking a less shallow pass (less load) and making your end mill as short as possible (more rigid) will help.
@ashtonpadilla5269
10 ай бұрын
Good RPM but the feed is a bit high, and running the wrong direction. Looks like it might actually work.
@scottrich976
Жыл бұрын
You are cutting the wrong way round. Move against the spindle rotation. Always cut anti clockwise with a clockwise spindle.
@seanhurd4633
Жыл бұрын
But you shouldn't climb-mill on steel, you should be conventional milling on harder materials like steels. Climb on brass and aluminum or plastics. This will reduce the chatter as long as your feed is well matched to your speed and tool toughness
@CodyRayDees513
9 ай бұрын
Think of the cutter as a car tire throwing debris behind the car. It don’t work too well if the debris is thrown infront of the tire and ran back over.
@patrickhouchins9074
10 ай бұрын
With a router C&C the higher the rpm the better is almost every case. Just spend the extra money on bits so they don't dull quickly
@jakeminner6650
11 ай бұрын
Some coolant on your tiny desk might help. I get your making a video but I can see my parts fine with TSC and outside coolant t. I don't knkw what your max spindle speed is or the tooling your using but it might.
@mikipoopoo
Ай бұрын
I was taught that when cutting steel you actually have to lower spindle RPM compared to aluminum
@ScottHouston99
10 ай бұрын
You're using a climbing cut which is incorrect for the amount of material you're removing. Try feed in the opposite direction for rough cuts where you're removing a lot of material and then use a climbing cut to take a very shallow (0.1mm) cut on the last cut. (This should work for mild steel or low carbon steels like EN8)
@haavard1989
10 ай бұрын
Look up the vendor for speeds'n'feeds and then adjust it down to fit your machine 👌
@lyn-jhonosia8981
10 ай бұрын
OMG, this one is an actual desktop CnC!!!
@foxman150
10 ай бұрын
Yea climb cutting is a good way to break an bit or damage your servos
@admiraldecepticon5602
Жыл бұрын
try reversing the movement direction. tweaking speed of your bit doesnt do much
@justinbelshe
Жыл бұрын
Still a useful tool, potentially, and I'd be proud to have one in my shop. You just can't ask too much from it, it's a little baby! Maximum spindle, minimum feed, use some kind of badass modern cutting tool.
@RealNotallGaming
10 ай бұрын
the problem is that is a 4 flute finishing end mill is not good for roughing
@DynaZor
Жыл бұрын
a channel I discovered recently (I hope it's not this one) talked about the collets; a cheap collet will produce any problem possible and be almost undetectable as the cause
@freemansfreedom8595
Жыл бұрын
Increase RPM's and reduce feed rate by an order of magnitude. When the machine does not have enough power, your only option is to cut it by being "annoyingly persistent". However if you do increase RPM's, you will have chatter in some capacity since the machine is not rigid enough. Doing conventional milling also helps in this kind of machines, as it will help dealing with the backslash these machines have. Also, as a kind of universal point: 12k RPM's, and between 200 and 1200 m/s per second are usually safe bets. Not great, but not wrong either. Source: My own painful experiences. I man a 3mx1.5m wood router to mill aluminium.
@klimakleberwegreisser
9 ай бұрын
you need to change direction. not from right to left but from right to left!!! they way you do it is only for high end machines
@cray2602
Жыл бұрын
The only reason to ever conventional mill metal instead of climbing is on a hand machine such as a bridgeport etc etc which are a bit loose and have tons of backlash. It can be dangerous to climb on a hand machine. Conventional milling makes a chip from thin to thick which rubs causing heat and rapid tool wear..I have been a professional machinist for over 30 years, Ive seen it all many many times.
@RHCPFAN-yk6sw
11 ай бұрын
Feeds and speeds. Also maybe try an endmill with more flutes.
@burnheretic3950
9 ай бұрын
Yeah for sure, the first pass was climb milling. The pass that looked clean appeared to be conventional milling.
@kw2519
Жыл бұрын
What are you feeds and speeds? You’re moving your rpm’s and federates all over the place. Maybe try a shallower cut? I see you’re trying about 10% step over but you’re doing it at near full depth. Cutting speed is a thing for a reason, it’s the optimal material removal rate. It’s different for each material. Don’t climb cut either, that thing isn’t anywhere near rigid enough.
@cayde7469
10 ай бұрын
It could be because you are climb milling instead of conventional milling. When climb milling you have to have super ridged setup and a pretty low feed rate and shallow doc.
@Skrillex1212
10 ай бұрын
Ahh, this hurt to watch. The endmill should come with basic feed rates and speeds in a manual, otherwise there are plenty online. Things can fet ugly quickly with resonance/harmonics
@vmac159
Жыл бұрын
The first cut is the deepest🎶
@jackfrench8374
Жыл бұрын
Smaller cnc machines probably can climb mill like the cnc’s so I would stick to conventional milling with slow fead rate and medium rpm’s
@CasanovaFluff
9 ай бұрын
You’re going the wrong direction. The cutting head wants to climb the part.
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