Costly Mistake Fixed with a CNC Fixture

⚠️CAUTION ⚠️ Never use a downcut bit on HDPE! All CNC owners know, mistakes are inevitable, and thankfully with a little brainstorming CNC fixuring has saved the day. #cnc #cncfixture #hdpe #cncmachining #woodworking #oddlysatisfying

[macmac]

You need as better plastic supplier if that HDPE is $300

[Stork_Squatch]

wood working tip for you, always cut slightly bigger, so you can clean up the edge.

[FrostD]

Puts his thumb over the corner that still has the chatter marks haha !

[thorak]

lol except the one you covered up with your thumb at the end....

[MichaelTeeuw]

Ohhhh this makes so much sense. I once built a cnc machine and was never able to get good results with this material. Only ever used downcut bits. 🙈

[jasonblanton]

If you would run an o-flute in the beginning it would do what you want with the finished edge.

[maxwelllenz]

wait till he finds out what a belt sander is

[acerjuglans]

Wouldn't a conventional profile cut be better than a climb cut? In my experience with HDPE, it is. I only do climb cuts when i want to prevent splintering in softwoods/hardwoods.

[ZoeyR]

Use a tripple straight flute bit with a conventional mill pass as a finish cut this will leave a glass like surface

[thatgreenguy]

I feel like you could just run that edge over a belt sander faster than programing and jig building. Does it being plastic make that difficult or something ?

[b-radvinylindustries]

Try running the cutting head in thr opposite direction then the direction the tool spins.

[juggalojay]

The vaccume used to keep the board in place ..??cause it shure didn't clean up the debris ?

[laird]

I used to make sheets of high density polyethylene

[jaalanodaicyr]

Why is this plastic so expensive? What makes it different?

[Serpardum]

As long as it's still within tolerance

[dmtvnle]

Would double sided tape have been sufficient? Seems like a waste of plywood (unless all the parts you make fit into it, then its a jig instead of a one off and this is just part of your normal process)

[RideaKawasaki]

Body Armor. Yep. He says $300 a sheet, yet the world throws away tons of continuously. Wastful humans

[audio]

High pressure Air flow directed down/at the cutter to evacuate chips. Setup same as metal cutting uses coolant can even use coolant spigots to run airline through or a 1/4 copper water line with fine nozzle . Straight 2 flute solid carbide also works well.

[arthur]

On straight cuts a jointer works great as well. If anyone is wondering this material brand name is called starboard.

[mvdv]

How you secure the sheets?? Please help