Tomorrow I hope to start the chassis and was just wondering the welds on the outside faces of the chassis , should they be ground off afterwards??? What have others done? does grinding them down significantly weaken the joint?
Your thoughts?

Kev

depends how far you grind them
i'f they don't look REALLY messy, and don't cause problems getting in the way of bodywork and stuff, i'd leave them

Penetration, Penetration, Penetration sir

Plus the norm is to bead with PU adhesive as well remember

As above..... if they get in the way of pannels etc... grind...


But if not... leave them alone... clean of spatter... but leave the weld alone....

It might add a tiny bit of weight... and look a little bit ugly... but it could save your life!

My thoughts exactly. cheers guys.

If you are really fussy, put a 45 degree chamfer on these edges before you weld and your weld will fill the valley formed.
Tig welding would be better and then you could see the weld being laid down.....

Hi Kev,

A flap disc is the tool to use.

HTH

Paul G

http://www.mig-welding.co.uk/finishing-welds.htm

first pic & fourth pic demonstrate the capabilities of a flapdisc I just need to find out where to buy them now

They can usually be found anywhere that sells angle grinder discs. I found it useful to buy 2 - one coarse and one fine.

Whatever you get, remember that a light touch is most effective.

halford have them for a start

The standard flexible disks + backing pad for angle grinders also do a good job at cleaning up welds.