Surface Grinding Services?

Surface Grinding Services?

This topic has 3 replies, 4 voices, and was last updated 25 October 2024 at 13:04 by duncan webster 1.

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25 October 2024 at 11:30 #761089
keith hodgson
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@keithhodgson40059
Hi All, I would like to produce a 1/4 BSP thread in brass right up to a shoulder, but my die has the usual lead in on both faces. My lathe requires a non standard changewheel to cut 19 tpi (unobtainium), and the couple of grinding companies I’ve approached aren’t interested in my small job!

I would like 1mm of thickness removing from one face, so that the die can cut tight up. Is there anyone with a surface grinder could do this for me? Happy to post my die.
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25 October 2024 at 11:46 #761092
Craig Brown
Participant
@craigbrown60096
Hello Keith, I should be able to help. I will send you a PM.

Cheers, Craig
25 October 2024 at 12:43 #761103
DC31k
Participant
@dc31k
On 25 October 2024 at 11:30 keith hodgson Said:

My lathe requires a non standard changewheel to cut 19 tpi (unobtainium)…

Post salient dimensions and within 24h, you can have a 3D model that would allow the unobtainium to become obtainium, with no neutron bombardment, and no toxic waste. 3D printing is not quite cold fusion, but close.

You could always cut the shoulder 1mm deeper than required, cut the thread and then sweat on a 1mm thick washer so the thread ends up against the wall.
25 October 2024 at 13:04 #761111
duncan webster 1
Participant
@duncanwebster1
Can’t you redesign your way out of the problem? A washer springs to mind. Or a very shallow counterbirecwhich in whatever it screws into.
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