Can I shorten an ice screw?

Discussion in 'General Discussions' started by ccaissie, Nov 16, 2018.

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  1. ccaissie

    ccaissie Member

    Since I'm a machinist, the answer is, of course I can. Most of my screws are for fat ice, very few for thin stuff like Desperado in Camden.

    I figure cutting to 4-5" (10-12cm) and regrinding the teeth and gullets. The only question is the thickness of the wall. It is actually thicker and stronger near the crank, so the screw will theoretically be stronger.

    Anyone have experience in this...having a thicker tooth at the cutting end.

    I could always just buy shorties, but have too many 22's.
     
  2. Mike R

    Mike R Well-Known Member

    There's no significant change in wall thickness. The angle, depth, and sharpness of the new teeth will have the greatest effect on performance. Before you go crazy though, take a look at the donor screw and how many threads there are. While it's common to cut a 10 cm screw down to 7-8 cm (or occasionally even less), cutting a 22cm screw to the 10-12cm you suggest will leave you with a threadless tube. Years ago someone tried to tell me that it's a better idea to cut that threadless part of the tube out and weld the threaded part back on to the hanger end. Having seen how BD tests their screws to failure, I have a great deal of respect for the screws' strength. I'm sure there are fantastic welders out there, but there's no way I'd ever use a cut-and-welded screw. YMMV.
     

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