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DTI accessory threads - Mercer - Verdict etc.

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Rik Shaw19/07/2020 17:34:44
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1494 forum posts
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I've never taken much notice of the bits and pieces in my DTI boxes - if they do the job then that's OK for me. Today though I had a need to modify a dovetail clamp to suit a job that I'm doing.

dticlamp.jpg

If you look at the thread on the LH side of the clamp I want to make a knurled knob to fit the thread. Easy I thought until I checked the thread. It is 7.2mm diameter and my metric thread gauge indicates a pitch of .065mm.

I have a good collection of taps, some wierd but nothing that will do this job.

Rik

Nicholas Farr19/07/2020 18:09:04
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Hi Rik, do you mean 0.65mm pitch, which makes it very close to 9/32" x 40 tpi ME.

Regards Nick

Swarf, Mostly!19/07/2020 18:58:34
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80 photos

Hi there, Rik,

I don't know if it's in the latest edition but the MSC catalogue used to have a couple of pages devoted to screw-on accessories for DTIs. There were two series, one with a metric thread, the other with a USA inch-based thread. (The listing says what the threads are. )

I haven't checked lately but you might find their on-line catalogue still lists that information.

Best regards,

Swarf, Mostly!

Brian Oldford19/07/2020 20:09:21
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686 forum posts
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Maybe **LINK**

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