Moderator: Tim White
rlboyce wrote:If you plan on machining these bars yourself, just take care not to work harden your material too much, which can increase brittleness and induce internal residual stresses. You definitely don't want cracks developing.
Also, if you are planning to use stainless steel tubing, make sure you don't go too thin. I would go at least as thick as the stainless steel bars found on most other racks.
Here are some good tips on stainless steel machining: http://www.azom.com/article.aspx?ArticleID=1178
graveleye wrote:It might not be cheap, but I don't see why you couldn't just buy them from one of the American cave outfitters. It's not a prohibited export item, so they should have no problem shipping to you. Of course, if you have the ability and means and desire to make your own, then by all means! I can relate.
by tamarmole » Sun Mar 09, 2014 3:55 pm
I was planning on using 22mm tube with a 2mm wall thickness
Adam Byrd wrote:by tamarmole » Sun Mar 09, 2014 3:55 pm
I was planning on using 22mm tube with a 2mm wall thickness
For what it's worth, I machine my own replacement microrack bars from the same material as the original manufacturer: 1/2" Schedule 40 304 stainless steel welded pipe (21.34 mm OD x 2.77 mm wall thickness). It is my opinion that Schedule 10 (2.11 mm wall) is too thin for a rack bar. A gritty rope will still wear through stainless steel, but definitely at a slower rate than aluminum.
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