Comments on: Rack Building Basics — Vice grips and spokes http://alexwetmore.org/archives/500 Thu, 09 Oct 2014 15:41:30 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: AlexWetmore http://alexwetmore.org/archives/500/comment-page-1#comment-4081 AlexWetmore Fri, 12 Oct 2007 00:41:21 +0000 /blogs/alex_wetmore/archive/2007/10/08/rack-building-basics-vice-grips-and-spokes.aspx#comment-4081 In every example but the first one the vise grips are far from the metal being heated. They don''t even get warm. In the first example the tubing was thin. My rack tubing has 0.028" (0.7mm) or 0.035" (0.9mm) wall thickness, so it heats up very quickly. The vice grip got warm, but it didn''t even get hot enough to discolor. I wouldn''t use it for direct clamping if objects being brazed had a much higher mass. In every example but the first one the vise grips are far from the metal being heated. They don”t even get warm.

In the first example the tubing was thin. My rack tubing has 0.028″ (0.7mm) or 0.035″ (0.9mm) wall thickness, so it heats up very quickly. The vice grip got warm, but it didn”t even get hot enough to discolor.

I wouldn”t use it for direct clamping if objects being brazed had a much higher mass.

]]> By: bill connell http://alexwetmore.org/archives/500/comment-page-1#comment-4080 bill connell Thu, 11 Oct 2007 18:02:43 +0000 /blogs/alex_wetmore/archive/2007/10/08/rack-building-basics-vice-grips-and-spokes.aspx#comment-4080 It seems like a pair of vise grips would be too much of a heat sink for a job like that, but maybe that''s only the case with the low-power MAPP setup i''ve been playing with. Does it slow things down much with your oxy/propane torch, or is it hot enough to get done before the heatsink effect kicks in? It seems like a pair of vise grips would be too much of a heat sink for a job like that, but maybe that’’s only the case with the low-power MAPP setup i”ve been playing with. Does it slow things down much with your oxy/propane torch, or is it hot enough to get done before the heatsink effect kicks in?

]]> By: AlexWetmore http://alexwetmore.org/archives/500/comment-page-1#comment-4079 AlexWetmore Mon, 08 Oct 2007 04:33:44 +0000 /blogs/alex_wetmore/archive/2007/10/08/rack-building-basics-vice-grips-and-spokes.aspx#comment-4079 It''s a Kogswell-made fork that I bought through Jeff Lyon. It''s been raked to 64mm and will be used on my Bridgestone RB-T to make it a low-trail commuter. It’’s a Kogswell-made fork that I bought through Jeff Lyon. It’’s been raked to 64mm and will be used on my Bridgestone RB-T to make it a low-trail commuter.

]]> By: Fred http://alexwetmore.org/archives/500/comment-page-1#comment-4078 Fred Mon, 08 Oct 2007 00:50:40 +0000 /blogs/alex_wetmore/archive/2007/10/08/rack-building-basics-vice-grips-and-spokes.aspx#comment-4078 What/Whose fork are you brazing onto? What/Whose fork are you brazing onto?

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