Shear Hog on Tormach 440! Widget74

[@AndTheCorrectAnswerIs]

That little thing is the BEAST of small milling machines.

[@Sootmaker]

John, your having to much fun! You don't miss a beat.

[@Sootmaker]

+NYC CNC Thought you would say that! LOL!!!

[@imissmynut]

At a CNC shop I work at where we made missile parts and f1 parts we just set the rpm to max and just adjust all other parameters to the rpm

[@imissmynut]

+NYC CNC Am the fees rate, etc was just based on the rpm and it works because they had these contracts for 5+ years

[@kevinkillsit]

+imissmynut +nyc cnc never let perfect, get in the way of better.

[@GregsGarage]

NICE! I've seen a lot of guys online cutting alum with high feed rates and taking monster bites. Cool to see the tormach pushing like that.

[@stormbringermornblade8811]

look's like the 440 is turning out to be the little mill that could. Keep doing what you'r doing there John.

[@ChristoCandiotes]

I agree with the comment about the WOC, DOC etc in the video. Something I would love to see in this video is the tool temperature though. Can imagine the tool heats up quite a bit more with the increase in rpm? Good video John.

[@mlw19mlw91]

Might be colder

[@TAWPTool]

Thank you for the 440 content John! Keep up the great work.

[@JohnGrimsmo]

Sweet! Great test for that machine. If you wanted to do some more testing you could design a part that needs lots of roughing then use this s/f recipe. It's just fun to watch a lot of material disappear, more so than just one linear cut.

[@alfredlyon27]

Awesome brother! Haven't we been telling you to speed up your RPMs all along?! Very , very nice for that little machine.

[@wtopace]

Great video! I love that you're pushing the 440 hard - Tormach better have cut you a sweet deal on your army of machines, because at the rate you're going now, you're going to cause a lot of the masses to bust out their credit cards ;-)

[@mechfeeney]

Thank you for this video! I just got my shear hog in today and am going to use your formula.

[@Blue.4D2]

Hey John. After you shear the hog, what do you do with the wool? Seriously though, it's always fun to see that tool spraying chips like a fire hose.

[@PeterWMeek]

It looked like you were using an air jet for chip clearance. Was there any lubricant or mist in that air? Was the air chilled in any way? (Vortex tube or the like. I have one that takes compressed air in and emits two jets - one cold and one hot. I haven't used it for machining yet; I just got it because it was a really neat device.)

[@PeterWMeek]

+NYC CNC - I'll have to put the vortex tube on my mill and see if a blast of cold air works as well as mist or coolant.It would have to be cleaner. Supposedly it can go to -20˚. I suppose you could put WD40 in the tank for your mister. It claims to stick to the tool more strongly than the aluminum from the workpiece which keeps workpiece metal from sticking to the tool.

[@BandBconcrete]

John if you had to pick one tormach what one would it be (440,770,1100) and why?

[@dbradley4065]

Is the vise keyed? 3 points make a stable base, I always used 3 clamps on a vise. Nice cutting.

[@snowgoer540]

I really like that you started putting all the speed and feed, WOC, DOC, etc data in the top left of your cut videos. One question I had is if you have a video that walks through the CAM portion of Fusion360 as far as what translates to what as far as WOC, DOC, etc. Maybe that seems simple, but they dont specifically call the inputs by those names. Lastly, one frustration I have with Fusion360 adaptive pocketing is when it says "empty tool path" with no explanation as to why. Any advice here? Thanks for your videos John, as a "hobby machinist" they help me a great deal!

[@adithmart]

You could try a spiral pocket with climb milling..

[@MikePalmer42]

That's an awesome tool with a really impressive finish machining tools seam to be improving all the time

[@adithmart]

that's great! you never showed conventional milling. ?

[@rchopp]

That machine is a beast in a good way, there must have been a incredible amonut of pressure on the tool during the last couple of cuts and for lack of the proper word it almost looked like there was some snipe at the end of the cut but still impressive.

[@yoonki]

Yeah... the stock fogbuster arm sucks. I ended up modding mine to fit a noga arm, and it is sooo much better. If you're interested I can send you a picture of my setup.

[@GeorgiMirov]

Hey John can you make same video for the Shearhog on the 770 ?

[@adamdevandroid]

Would you consider the 440 big enough for the average job that comes in the door or would it be better to get the 770

[@RyanWeishalla]

Any differences when if you conventional mill instead of climb milling? My memory isn't good enough to remember if you covered that with the Shear Hog on your other Tormach.

[@kchigley5309]

+NYC CNC No. The only situation I have ever come across where conventional was beneficial over climb in a CNC mill is cutting plastics with HSS tools. It just seems to leave a slightly better surface finish and less of a burr on the stickier plastics like UHMW.

[@BigMjolnir]

+Kenneth Higley in general, for wood you always want climb milling to avoid tearout. More applicable to CNC routers than mills, but I've seen people do weird things, so just adding the point. -- Mike

[@VLAHECO]

I want that machine in my garage ...wow

[@WadeMade]

If that is Aluminum that's quite a bit of noise. What is the mass of this machine? How does it do in steel with the same tool? I have to imagine it's a howler.

[@SailinCTD]

I've been wanting to see the 440 run closer to its max feed, any chance you'll try a recipe running a higher feed?

[@SailinCTD]

+NYC CNC Oh ok, I think tormach advertises the max feed rate to be around 110 ipm. Do you think it can make cuts around 100 ipm? I calculated a recipe of .5 DOC, .05 WOC, and 100 IPM. That would be around .625HP for aluminum. In your opinion, would that be worth it kinda cut for the 440?

[@kchigley5309]

You don't buy a mill with a 10K spindle to run it at 4500 :P I try to get somewhere near 3000 SFM in 6061 when I can. I would try increasing DoC, lower WoC and increase chipload to match your available power. If I had to guess, you could be running that at .4 depth (I think the shear hog insert can handle that), .075-.01 stepover and closer to 100 IPM at 10K RPM for shoulder or perimeter roughing. According to Gwizard, the .1 cut would be .768 HP with an MRR of 4 CI/M. We have a 3 flute 1.5" Shear Hog here and I really want to show you what their tools can do....but I don't have a good way to hold it right now. Need to go get a Weldon flat put on the darn thing.

[@toyomatt84]

+NYC CNC Just for more information to play with; at our shop I run a 2", 3-flute button insert cutter at 7500 RPM taking .200" D.O.C. and 1" stepover... at 200IPM feed. :) No problems what so ever, for roughing 6061.

[@eformance]

John, I just don't get it. The Shear Hog is rated to take 6 CIM per HP, if that machine is 1.5HP then you should be pulling 9 CIM. You're doing around 20% of that. Either there is more to be had, or the 1.5HP spindle is optimistic. EDIT: So it's a 3/4 HP spindle, which means it should pull 4.5 CIM with a Shear Hog. I'd like to see you push it to 4.5 CIM and see what it does.

[@eformance]

NYC CNC Yeah, I think 4.5 CIM will make it scream for mercy.

[@cemyasam]

well described

[@heatwoleboarder]

at 2:08 Chip falls off.... CLANG haha must have been quite the chip

[@mechfeeney]

Do you have a recipe for the superfly yet?

[@mechfeeney]

+NYC CNC Going to write you a PM.

[@cylosgarage]

Ahh climb cutting makes me nervous... ik you can handle it, but it still scares me

[@DStrayCat69]

Wow! Love it :-)

[@MrDaniell1234]

you need to fix your cow

[@BrittWayneSmith]

chips a flying!!!

[@SleekMouse]

He always seems really afraid of high speed and yet it almost always works better.