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BOXFORD IMPERIAL DIAL

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Manxmodder:
Griff, if imperial then they're most definitely Acme thread form, most likely 10 tpi single start(100 thou per rev).

The metric screws will be Trapezoidal (TR) thread form.

OZ.

GRIFFIN:
Thanks for that Oz,

That's one less bit of homework to do, I'll get a thread gauge for the dimensions and either buy or grind a tool and have a bit of practice on some scrap.

Cheers, Griff.

Manxmodder:
Griff, these inserts and tools are what I use for Acme threads,and a good number of other forms.
http://www.shop-apt.co.uk/acme-29-external-threading-inserts.html

Tools to hold inserts.
http://www.shop-apt.co.uk/ser-external-threading-tools-apt.html

 16 ER insert and suitably sized tool shank to fit your toolpost,I generally use as big a tool shank as my tool post/centre height will allow. On the Harrison that is 25mm square.

OZ.

howsitwork?:
 :thumbup:

I applaud your honesty. It still made for an interesting read. :nrocks:

howsitwork?:
What time zone does this site run in? It's 19.19 not 02.19 here ! :Doh:

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