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Routing track with CNC and 0.7 mm bit.

Posted: Wed 16. Sep 2020 16:01
by kiklo
A friend of mine has a small CNC router - but no small bits.
We decided to test with a small drill bit just to see what happened.

Of course it broke, you can see it bending.
Then he used the remains for a new test.
It did work if we did it slow enough. We will do more when I get proper routing bits.

https://photos.app.goo.gl/EZTpPmPmFnN273pr5

Re: Routing track with CNC and 0.7 mm bit.

Posted: Wed 16. Sep 2020 16:28
by Ned
What kind of material are you trying to cut?
The bit would not likely break if you were workling with Polyisocyanurate Foam Board Insulation or Extruded Polystyrene (XPS) Foam Board Insulation. Polyisocyanurate is quite rigid and very light weight. With the appropriate facing material, better than XPS for making a track in my opinion.

Re: Routing track with CNC and 0.7 mm bit.

Posted: Wed 16. Sep 2020 17:01
by kiklo
This was just crap wood. MDF is Next.

Re: Routing track with CNC and 0.7 mm bit.

Posted: Wed 21. Oct 2020 07:33
by kiklo
Then I got the 0.7mm bit to test. It took some time from aliexpress.com
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And yes they brake too. So go slow it the thing.

These are straight bits, I have not found 'ball' bits in 0.7mm size. But I could squeeze the wire right down and it stays in the slot. So it makes it simple.

Re: Routing track with CNC and 0.7 mm bit.

Posted: Mon 16. Nov 2020 17:21
by kiklo
Her are the ultimate ball routing bit 0.7 mm from aliexpress. (Hard to see but it is a ball bit.)

Very short neck, so hopefully these can last. And as I'm now gluing 2mm cork onto MDF board it should even be possible to hand route.

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