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Grinding welds
dave - 9/1/12 at 11:14 PM

I have been filling up the old rivet holes in the chassis and now I need to grind them down. I have a 80 grit flap wheel but its a bit rough, is there something else I can use?

loggyboy - 9/1/12 at 11:19 PM

Metal file?

Simon - 9/1/12 at 11:30 PM

B&D Powerfile. Various grades of belt available from Screwfix etc. Shop around for best price - varies wildly!

ATB

Simon

owelly - 9/1/12 at 11:48 PM

Flap disc in the angry grinder. Go nice and gentle and you can polish steel.

Andi - 9/1/12 at 11:54 PM

quote:
Originally posted by owelly
Flap disc in the angry grinder. Go nice and gentle and you can polish steel.


+1 for the angry flap disc.. Gives a mirror like shine to the roughest of steels

NigeEss - 10/1/12 at 12:01 AM

+2

owelly - 10/1/12 at 02:17 AM

This was a bit of a rush job but you get the idea.







[Edited on 10/1/12 by owelly]

MikeFellows - 10/1/12 at 08:47 AM

you must have the patience of a saint how long did that take

good work though

owelly - 10/1/12 at 09:01 AM

Sections sliced with thin cutting disc using paper template so took about 20 minutes. Setting up, tacking then MIG welding took about an hour and about 10 minutes to whiz over it with the flappy disc.

onenastyviper - 10/1/12 at 10:19 AM

quote:
Originally posted by Simon
B&D Powerfile. Various grades of belt available from Screwfix etc. Shop around for best price - varies wildly!

ATB

Simon


Just make sure you thoroughly clean the metal swarf otherwise on day it will flash over and die - did on me
Angry Grinders seem to be better designed to handle the dust - the powerfile seemed to suck it in through the drive sprocket.

designer - 10/1/12 at 11:13 AM

Another for the flap disc.

Peteff - 10/1/12 at 05:15 PM

I use a flexible backing disc with 80 grit fibre disc on the grinder, it works out a lot cheaper than flap discs if you are doing enough and you can get discs in any grade.

Simon - 10/1/12 at 08:35 PM

quote:
Originally posted by onenastyviper
quote:
Originally posted by Simon
B&D Powerfile. Various grades of belt available from Screwfix etc. Shop around for best price - varies wildly!

ATB

Simon


Just make sure you thoroughly clean the metal swarf otherwise on day it will flash over and die - did on me
Angry Grinders seem to be better designed to handle the dust - the powerfile seemed to suck it in through the drive sprocket.


Did you leave the dust collector on, b&d recommneded 20 years ago that if using on metal, just to leave the back open without the collector.

Broken dozens of them meself. Make sure if you wear out the arm (bearings in wheel go) that you hang onto it, and when grinder dies under warranty, send arm back to get replaced too.

ATB

Simon

Neville Jones - 11/1/12 at 11:18 AM

Try one of the combined sanding and polishing discs. You should be able to get to a near miror finish.