parameters for cutting thin metal

[kjackswood]

Is anyone familiar with using there machine to cut or etch thin metal and if so what type of bits ( part numbers and where to buy if available) and what cutting depths work best.

__Ken

[jeb2cav]

Hi Ken,

I'm not familiar, but would strongly recommend you search through the Vectric User's Forum as well. The Vectric forum is much larger and older as it includes all the folks who use the Vectric software (like VCarve Pro), regardless of the CNC machine they have. Another forum I've noticed a lot of posts on folks working in metal is http://www.cnczone.com. Good luck.

[RhB_HJ]

Hi Ken,

I guess the first question is "what kind of metal?", but my hunch is nothing more substantial than aluminium, brass and copper. As for as speeds, feeds and depth of cut is concerned I would think the normal values apply, which means the minimum speed of the router is certainly on the high side. Once I get to that point it will be strictly carbide end mills.
Oh, remember the note in the manual NO COOLANT OF ANY KIND. Except perhaps compressed air, but I wouldn't recommend that either. Compressed air and relatively unprotected leadscrews is a bad mix.

[kjackswood]

Thanks Guys for the posts, I did get a chance to speak with TIm Owens at the last wood show and he showed me what end mill to use and so forth. I am only looking to engrave little name plates for some of my previous wood working projects. I only plan to use thin brass or alluminum. Not gonna try any hard steel.


Thanks Ken

[Bob]

Ken,
Would you be willing to share what Tim recommended for bits, feeds, and speeds?
Thanks,
Bob

[RhB_HJ]

Reference table for solid carbide endmill bits can be found here.

Reaching back into my "former life" I'd recommend a single lip cutter, using that will require the speed range that is available on the Colt. First source when using Google http://www.harveytool.com/products/inde ... pAodlES_oA

or

http://bitsbits.com/ 1/4" engraving cutters, they have a nice selection.

[kjackswood]

Sorry for the late reply,
Tim advised that I check with local tool suppliers for end mill bits 1/4 inch, he did not mention a recommended speed.
I think it will be an expermental thing.
When I get my first plate off the machine I will report my results on here.

Ken

[kjackswood]

Thanks RHB_HJ for the websites for tooling.
I am still experimenting. These are good sites.

Thanks
Ken

[dharps]

New Friends:
I'm trying to determine if I can cut profiles in 1/16 thick mild steel. Any Opinions?
This is for harp parts (yes, the musical instrument)
Thanks