Reply by David Kirtley

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Posted on beall wood threader

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David Kirtley

1286 posts in 2966 days

#1 posted 11-23-2012 02:12 AM

I have the smaller sizes. As far as the holding power, I really can’t think of a reason you would want to clamp things with more pressure than the 6 tpi threads could put on something. The smaller ones are better suited to making bolt together items or handscrews than vise screws. The finer pitch gives them more pressure but slower action. The large bench screws do better with a higher pitch thread to make them act faster. Also the 60 deg pressure angle is a bit steep for big screws. They usually go to 90 deg threads on the big screws. 1-1/2 in screws for a bench screw are pretty small. Usually they go up to 2in or 2-1/4 range. Some larger. Unless you abuse them, they pretty much last a lifetime.

Unless you are going to make a lot of them, it is cheaper/easier just to buy big screws.

-- Woodworking shouldn't cost a fortune:

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