Ground clamps

[Joe45]

I might get a tweco one and be done with it . Mig welders especially need a good clean ground

 

[Johnseat]

Why is the tweco so good?

 

[Joe45]

They seem to be all brass plus they have a good way to bolt down the cable lug

 

[Richard.]

Quality materials, hard wearing, nicely finished parts, they are just manufactured to a nice standard.

 

[HughF]

Tweco, I bring them back from the states, not cheap but decent....

 

[Mart63]

I like the Myking clamps because they are solid brass, a very heavy construction and because you can screw them down really tight so not relying on a spring.

 

[HughF]

I like the Myking clamps because they are solid brass, a very heavy construction and because you can screw them down really tight so not relying on a spring.

I have a myking one on the lead that is permanently connected to my welding bench, seems a nice clamp and deals with 300a regularly without issue.

 

[morssdn]

If you have a permanent welding table, the logical best way to do this would be to eliminate the clamp (and the cost of some of clamps with the 100x csa of the actual ground cable), and bolt the crimped lug on the end of the cable directly to a hole drilled in the table top. The contact pressure will be higher than any clamp.

 

[Wightsparks]

Good thread timing.
As a hobby welder I don't need a £20 brass one but I do need a better one than the lightly plated one that came with the mig so I am going to get one of these https://www.weldingdirect.co.uk/500amp-earth-clamp-8777-p.asp

Will report back!

 

[backpurge]

Bolting the earth lead to the table gives an excellent connection between the welder and table but does not always ensure a reliable contact to the actual workpiece

 

[HughF]

The best ones in the UK for mig machines up to around 160-180 amps are the nevada 200...

 

[Robotstar5]

If you have a permanent welding table, the logical best way to do this would be to eliminate the clamp (and the cost of some of clamps with the 100x csa of the actual ground cable), and bolt the crimped lug on the end of the cable directly to a hole drilled in the table top. The contact pressure will be higher than any clamp.

We normally welded an M12x30mm bolt by it's head to the bench leg so the lug was retained by a nut.

Bolting the earth lead to the table gives an excellent connection between the welder and table but does not always ensure a reliable contact to the actual workpiece

Ours were used for production welding, welders (tackers ) didn't have time to put a clamp on each workpiece and see my previous photo what happens if they find a clamp

 

[Wightsparks]

Well I got my new clamp from CWS today - Was not expecting that much for £5.90 inc. but it's a monster, really strong spring and a big chunk of copper on the end



My workshop has a lot of flouro's don't know why the pic looks like I work in a cave...