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Re: Sub Diameter Tools

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Posted by Stephen Campbell on February 1, 2001 07:07:58 UTC

You can use a 6" tool!,and the convex curvature(prior to pouring the pitch lap) does'nt even have to match the curvature of the mirror,as long as the lap is making good contact,the pitch will conform to the mirror, as long as there isnt a great difference in r.c. mirror and tool f/5 and f/6.8 is close enough,now if the 10" tool was f/1 or f/10 there might be a problem,remember to press often ,you must maintain good contact,and this is very important:dont use too much overhang! if you turn down the edge its difficult to correct.
Use slow strokes and light pressure and dont let it dry out,use a spray bottle and run a humidifier if the humidity level is low.

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