Handy Tricks 7: Bike Mods and Projects

Step 14 Welding Clamp Without Marring Paint

Star says:

I've been learning a ton of stuff from Mars lately at MITERS:.
Need to weld your new chop-tacular? Where do you clamp onto the frame without screwing up the
paint job?

THE PEDALS! It works!

Comments

[HughBothwell]

I would recommend finding a junk seatpost. Drill a hole through it side-to-side about two inches from the top, stick a bolt through, and weld it in place.

Now remove your seat, stick the ground-post in, and clamp your ground on the bolt. Voila! Nice clean ground without paint damage.

[MT-LB]

one of the first things in the manual for my welder says "do not run circuit through bearings"

[Bidul]

+1
Even if it seems to be a great idea at first sight, heavy current isgoing to "solder" balls in the ball-bearing.
Use any other paint-free metalic area on the frame (seat support, for instance)

[csorrows]

To put it simply, DO NOT DO THIS!

[79spitfire]

Do not ground the welder like this, it will cause pits in the bearings and lead to an early failure of the bearings.

[Pierce14u2]

You may not want to place the welding ground there due to chances of melting the bearings if there is not alot of contact points for the elecricity flow. I have melted Bearings that way before but I think my main issue was that I didn't have the bearingins in tight so there was even less contact points.

[joetinker]

Em, prolly not a good idea if you value you're ball bearings...