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Author Topic: DIY Cabbing Machine  (Read 327 times)

MakkyBrown

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Re: DIY Cabbing Machine
« Reply #15 on: April 29, 2021, 09:46:31 AM »
Thanks Frank good info. What size small shafts did you use, I was thinking 8mm?The collet/quill shaft, have you had any issue with rusts? I've been tossing up regarding using one verses using a brass shaft drilled to 1/4 and a stainless collet clamp I have. The stainless collet clamp I have is not accurate enough by itself but when combined with a brass shaft drilled to 1/4 it might work.
MB

Faceting Frank

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Re: DIY Cabbing Machine
« Reply #16 on: April 29, 2021, 10:51:20 AM »
I do have problems with rust on the collet chuck, I wrap that blue tape you get from the hardware round it after fitting the dop. Its 18mm wide and the weakest of the glues, green is the next size up and a bit stronger. The collet has to go in the chuck a certain way to minimise its runout, on the dial gauge I can get it down to 0.015mm. You should be able to get an accurate ¼” hole in a quill with a ¼” end mill in a lathe, don’t know about a drill bit though. With a hole to let the air in and out after its finished.
I used 8mm bright bar for the small shafts and the quill is 12mm, all the bearings are an interference fit.
« Last Edit: April 29, 2021, 06:25:23 PM by Faceting Frank »

MakkyBrown

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Re: DIY Cabbing Machine
« Reply #17 on: April 29, 2021, 09:11:41 PM »
I haven't got a 1/4" end mill. The largest endmills I have is 6mm. Tricky to find 1/4" stuff on aliexpress. I am tempted to buy a 6.3mm drill bit and let run out etc cut the extra 0.05mm.MB

Faceting Frank

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Re: DIY Cabbing Machine
« Reply #18 on: April 29, 2021, 10:21:56 PM »
You can get heaps of 1/4" end mills on eBay. The problem with drill bits is they don't produce a good surface finish to the side of the hole, mills do. A 6mm hole finished with a 1/4" mill should be perfect.

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