this post was submitted on 20 Jul 2024
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bike wrench

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A place to ask bicycle repair questions, and for bike shop monkeys to share advanced non commercial wrenching resources (no YouTube self promotion). This is only for repair related topics.

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diy bike front or rear racks materials (lemmy.world)
submitted 4 months ago* (last edited 4 months ago) by evasync@lemmy.world to c/bikewrench@lemmy.world
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I had no idea that cromoly tubes were so expensive so Im now looking for alternatives..

a generic question I have is, does it really matter on what I use of its not for a competition setup?

I mean I dnt care if its relatively heavy.. my initial thoughts was using stainless steel tubes or even construction rods but everyone online seem to recommend only using cromoly..

edit: ordered 5x25mm wtainless steel tubes for 15eur (1.5m) the same in cromoly couldnt find them under 70eur..

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[–] mranderson17@infosec.pub 2 points 4 months ago

I'm not aware of a welding process that is safe for humans without at least a dust/fume extractor. That and a respirator with the appropriate filters for the application that fits under a welding hood is basically standard equipment even for hobby welding in my opinion. Also hex chrome is a particulate, not a gas, and tig welding uses solid rods (not flux core) and a much smaller heat affected zone so it's already better in that area AFAICT, but I'm not an expert in this area.

As far as particulates when welding go you should watch how careless people are when they grind their tungsten electrodes containing all kinds of dangerous additives with their respirator around their neck because "I'm not welding so I don't need it".

So yes, this is good advice. We should all think more about the things we do, even when working on home improvement projects and mundane stuff, that could end up damaging our lungs.