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It's something we'll keep an eye on, but the motors have a huge conducting metal path to keep them cool. On our other machines they stay cool, but on a test bench by themselves they get really hot.

@@berylcnc I suppose it depends how you're running them. My experience has been that those motors get up to around 60-70C under load.

​@@johngoodwin123 We haven't seen temperatures that high on these motors when attached to machinery, but it'll definitely be on the radar. A molded Silicone cover would be the replacement if it becomes a problem.

We do almost all of our R&D turning with a single VersaGroove cutter, the VG125-030-005-L320-U, aka "Style 5". It saves the time of setting up our gang tool machines with three different cutters.

Thank you!

Thank you for checking it out... Part 2 should be up very soon!

Thank you! We may go further with the concept and play with sharpened inside edges, penetrators, and other variations in some future video. Our channel is more about the design and machining, less about the application. Part 2 will be up very soon! Hope you check it out.

@@berylcnc certainly will. I envy your creativity and talent. But end results and saleabiity are what pay the bills and allow you to continue on your quest to develop new and greater things. I wish you well. You're already tech smart, be financial smart as well. Be well my friend. I appreciate your efforts and site. As a hunter, grain weight, velocity and ft lbs at a specified distance would be cool. This could be a very good arrowhead for smaller game. Typical broadheads have razor sharp blades with a penetrating point. Designed to slice internal organs. Yours takes a slightly different approach. Looking forward to results.

Thank you for checking it out... yes, there is probably some soul searching to do for exact applications of this prototype. Bullets can take advantage of very high velocities, so effects of the petals detaching are much more pronounced than on an arrow. A lot of the hunting ammo manufacturers want to advertise "retained weight", so no loss of mass on the projectile. Others, as you mentioned, want the projectile to fragment. You definitely have to check out Part 2... both scenarios are shown! Should be up very soon.

This is just a case study in achieving expansion and open connected petals in Copper; It's not supposed to be for hunting, although it could have applications for small game. About the one shot thing - many broadheads end up being $15 "one-shot" deals too. So for example, if this were to end up being a $2 hunting point, it would be made from steel, induction hardened only at the end, a central penetrator added, and the petal vertices sharpened up. As far as dialing them in - they should fly very close to a typical 100 grain field point. If not, you would burn one or two to validate their grouping and then you'd know for sure. Check out Part 2 in a few days - we hope you like it!

Can't argue with that! Especially Copper strings... in the R&D world sometimes we need reminded of this.

Legal or lethal... agreed. This prototype is not designed for hunting... simply to see if we can get a good opening of solid Copper in ballistic gel. Fully open diameter of the petals is around 0.850". We may address a hunting variant of this design in a future video, which might involve chemically sharpened steel vertices, longer petals, a central penetrator, etc. Basically, that variant would be a single-use broadhead.

Thanks for your comment! This would not be a big-game hunting point just yet... we may do a follow up video with some improvements for such a point. This one could perhaps be used for small game. Part 2 of this Copper point is coming very soon, so stay tuned!

Thank you for your subscription! We'll have Part 2 posted in a few days... hope you check it out!

Awesome! This was the starting point of the ideation / iteration cycle, so we didn't settle the hinge material (Part 2 will address this). The broadhead comparison test is a pretty cool idea... there's a few ways this expansion can be engineered, and it goes down a rabbit hole that we are probably going to avoid on our channel. Making this from Copper is sort of a calculated gimmick and shoutout to our friends in the machined Copper industry... in reality it should be steel, and the cuts probably engineered to meet at a vertex and provide some level of cutting capability if you want the most out of 60-90 ft lbs of energy from the arrow. (Maybe even way more than 6 cuts to get that knife angle smaller). So if this were to be used as-is, we might want it to dump all of the energy and have shallow penetration, or if the cutting capability can be worked out, then you'd want deep penetration comparable to a broadhead. Anyway, thank you for commenting, and we hope you check out Part 2!

Well now that you've asked, I'm going to look into it. Last year we attempted a bunch of challenge materials, including Tungsten, A2 + other tool steels, 316, 303, 304 stainless, 4130 Alloy, 4140 Alloy, and Titanium. We got through all of those, so we'll see what happens on Inconel. I would recommend all of these material on a Hardinge Turret Lathe and not a mini lathe, however. Thanks for watching!

Hi there... the 2-axis add on is $2,800 MSRP as of 6/29/22. Depending on your accuracy requirements for cutting Amber beads, you might not need the preloaded ballscrews and closed loop stepper motors. So if you wanted to do this for low cost I suggest a DIY build using the free Beryllium software at www.berylcnc.com. Then your beads can be created using some simple line moves and a G3 finishing arc. Check out the BerylCNC bead video for more.

Hi! Sorry for the late response.. base price is currently $2,800 USD for the MultiForm System. This package will hold +/-0.0002", has ballscrews and closed loop steppers, control box, and the full / latest Beryllium software package.

Thank you! It's rigid enough for light CNC cuts, but of course it's not as rigid as a Hardinge DV-59 turret lathe cross-slide setup, which is the originally intended machine. So on the mini lathe you might want to take 0.020" passes in plastics, 0.015" passes in Brass and leaded steel, and 0.005" passes in harder steel. Definitely peck parting at these small passes, where on a Hardinge you might get away with not pecking some parting cuts. All of these suggestions are based on the VersaGroove 0.030" wide #5 cutter, so other off the shelf tooling would need to be very sharp. Also if you don't have mist coolant or a dripper, be sure to brush cutting fluid on the part for each pass. Other than that, it gives a tremendous advantage to a bench lathe as you'll see in these YT vids. - Jason

Thank you sir!

Haha... ah yes, that's the VG125-030-004-L260-U, aka, an insanely long and thin carbide cutter. It's hard to believe, but the magic happens when you add CNC control and small passes, pecking, etc. As long as the chips can clear away ok and the forces on the carbide don't exceed its break point (about 25 lbs of loading for these tools) the tools will run just fine. So if you take 25 lbs and direct it all to a super sharp cutting edge, the material you're cutting will yield under the immense point pressure. Of course it takes a lot of experimentation, and it's difficult to achieve by hand. So these tools are not for everyone and should only really be used under CNC control. But if you want to try some, send me a form submission and ask for a sample. I owe a few others some samples and will try to send out a sample run at some point soon. This is all still a very new product line, but we use this stuff every day to make online parts. www.berylcnc.com/versagroove/

Hi there! There are many fine lathes that can do CNC threads; we have no issue using Geometric die heads on the turret lathe, or manual threading on the mini lathe. We'll be doing a stepper on the spindle at some point that will allow GRBL threading, but it's not the urgent priority right now.

@@berylcnc I thought you were selling this as a commercial conversion, which I still think is pretty useless without threading. How many of your customers will have a turret lathe to use for threading? There are not many small cnc lathes out there these days a few from China and that is it, old ones like mine almost never come up for sale. There seems to be an endless army of owners of mini lathes from China, I thought that was your market.

Controller is GRBL, but above that layer everything is controlled by Beryllium or BerylliumPRO in Python language for the GUI and mathematics / geometry stuff.

@@berylcnc cool thank you.

Yes, there are many possibilities here... we would love to have all the lathes ever made and try them all! haha

Yes... I believe they call this pinch turning? You could do a CNC conversion on the mini lathe and mount this on the back side too. The trick would be figuring out how to do this all with GRBL control or at least with one GUI. Might be easier than it sounds.

@@berylcnc I was used to write G-code for an Index G300 without this fancy stuff

Hi there! Check out www.berylcnc.com. We offer finished products, rather than projects, but there is a free / open source version of the Beryllium.py controller over at www.github.com/jkocher/beryllium if you'd like to build your own version of what you see here.

Hi Chris... website should be done within a few days...The MultiForm and the mini-lathe mount are both hard-anodized 6061 AL.