![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#1 |
Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,335
|
Best way to grind down welds?
Whats the best or most efficent way to grind down welds? Total noobie question to
![]()
__________________
RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
![]() |
![]() |
![]() |
#2 |
Registered User
![]() Join Date: Aug 2005
Location: Hillsboro Oregon
Posts: 6,449
|
Re: Best way to grind down welds?
Grinding disc followed by a flap sand disc on an angle grinder. 4.5" angle grinders are cheap and work fine for body/small jobs.
|
![]() |
![]() |
![]() |
#3 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
|
Re: Best way to grind down welds?
i like using a die grinder with a 3" cutoff wheel i feel they do a faster job and generate less heat on sheetmetal// on frame work and things like motor mounts made out of 3/16 thru 3/8 metal i'll normally use an angle grinder
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
![]() |
![]() |
![]() |
#4 | |
Registered User
Join Date: Jan 2006
Location: sidney , illinois
Posts: 312
|
Re: Best way to grind down welds?
Quote:
__________________
hey.....smell my finger 64 nova wagon , 63 nova convertible |
|
![]() |
![]() |
![]() |
#5 |
Senior Member
Join Date: Jul 2005
Location: Winters Ca. 95694
Posts: 4,843
|
Re: Best way to grind down welds?
I agree with all three post above and I have 3 4.5" grinders set up at all times!
1) 4.5" hard grinding disk 2) 4" .040 thick cut off wheel 3)4" flapers (grits per job) Then for smaller spots I have 3 small right angle air grinders set up with~ 1) 3" .040 cut off wheels 2) 2.5" 3m style spin on sanding disks 3) die grinding bits for real tight corners and yes the DA trick for the real smooth look. But the best trick short of TIG welding it (almost no raised weld) is to make sure you are using the right wire! For body panels I like to use .023 solid core wire with a 25/75% gas mix. Then adjust it for just enough weld for full penitration with out creating to large of a bead above the surface. Oh ya and PRACTICE, PRACTICE, PRACTICE!! Have fun learning and I highly recomend buying a few books on welding. Even if you know how to weld you can always learn a few more tricks. I have been welding for over 20yrs now (certified for almost 14 of that) and I just bought my first two welding books and so far (half way done with the first) they are great. I would have been so much farther ahead if I had done this 20yrs ago. I know people will ask so here it is~ Both are by Richard Finch, (eastwoods) 1) welders handbook 2)Performance welding handbook If you buy them read it front to back and do not skip over what you think you already know, you just may learn what you don't. Good luck, Kevin LFD Inc. |
![]() |
![]() |
![]() |
#6 |
Not a bad nut after all..
Join Date: Dec 2000
Location: ND
Posts: 1,756
|
Re: Best way to grind down welds?
What is the purpose of the flap sand disc?
__________________
'05 Chevy 2500HD 4x4 '72 GMC LWB 4x2 driver '72 Chevy LWB 4x4 plow truck '71 Blazer 4x4 driver '70 GMC LWB trailer |
![]() |
![]() |
![]() |
#7 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
|
Re: Best way to grind down welds?
A:getting rid of scars.
I use a cutting wheel.The rest is dress.
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
![]() |
![]() |
![]() |
#8 |
Senior Member
Join Date: Jan 2005
Location: Ontario, Kali
Posts: 2,427
|
Re: Best way to grind down welds?
I have a stupid question, what is a DA?
|
![]() |
![]() |
![]() |
#9 |
Iron Thunder
Join Date: Nov 2003
Location: Phoenix Arizona
Posts: 377
|
Re: Best way to grind down welds?
![]() ![]() ![]() ![]() ![]() i'm just kidding guys. i would be lost with out my grinder. |
![]() |
![]() |
![]() |
#10 | |
Registered User
Join Date: May 2006
Location: Colorado
Posts: 412
|
Re: Best way to grind down welds?
Quote:
|
|
![]() |
![]() |
![]() |
#11 |
Account Suspended
Join Date: Oct 2004
Posts: 1,276
|
Re: Best way to grind down welds?
For minimum grind and a flat weld: GAS WELD ( oxy-acetylene that is)
![]() |
![]() |
![]() |
![]() |
#12 | |
Registered User
Join Date: Aug 2005
Location: Pasadena,Tx /Pto Pta DR
Posts: 5,415
|
Re: Best way to grind down welds?
Quote:
Mike ![]() |
|
![]() |
![]() |
![]() |
#13 |
Registered User
Join Date: Aug 2005
Location: Pasadena,Tx /Pto Pta DR
Posts: 5,415
|
Re: Best way to grind down welds?
If you are a production shop you do not use a DA to grind down welds.
|
![]() |
![]() |
![]() |
#14 |
Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,335
|
Re: Best way to grind down welds?
Thanks for all the info guys. I appreciate it.
__________________
RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
![]() |
![]() |
![]() |
#15 |
Not a bad nut after all..
Join Date: Dec 2000
Location: ND
Posts: 1,756
|
Re: Best way to grind down welds?
What is the best grit flap sand disc to get?
__________________
'05 Chevy 2500HD 4x4 '72 GMC LWB 4x2 driver '72 Chevy LWB 4x4 plow truck '71 Blazer 4x4 driver '70 GMC LWB trailer |
![]() |
![]() |
![]() |
#16 | |
Registered User
Join Date: Sep 2004
Location: Rancho Santa Margarita - SoCal
Posts: 1,432
|
Re: Best way to grind down welds?
Quote:
![]() ![]() ![]() Sorry, had to... Mike |
|
![]() |
![]() |
![]() |
#17 |
Account Suspended
Join Date: Oct 2004
Posts: 1,276
|
Re: Best way to grind down welds?
IF you get it too hot youwill warp it............ How do you think the old school did it befor MIG??? OXY CETLIN!!!!
|
![]() |
![]() |
![]() |
#18 |
Registered User
Join Date: Sep 2003
Location: New Salem, ND
Posts: 1,558
|
Re: Best way to grind down welds?
So what do you guys think of 0.30 wire? Is it better to weld short beeds or just to keep tacking until it is all welded up. It seems like just tacks would leave small pin holes.
__________________
07 Chevy classic LBZ Duramax (a few mods) '67 Chevy 1/2 ton 2wd (in pieces) '69 Chevy 1/2 ton 2wd (on hold) '71 GMC 3/4 ton 4x4 ‘71 GMC 1/2 ton 2wd suburban |
![]() |
![]() |
![]() |
#19 | |
Registered User
Join Date: Sep 2004
Location: Rancho Santa Margarita - SoCal
Posts: 1,432
|
Re: Best way to grind down welds?
Quote:
Just razzin ya anyways, thought it was funny ![]() Anyways, sorry for getting off topic. I use a 60 grit and an 80 grit flap wheel. Never heard of one or thought it would do as good as it does, but they'll bust down welds pretty quick. I got mine at Home Depot, I think for like $6.00. They just thread right on to your grinder like the large grinding disks. Mike Last edited by BigMike; 07-15-2006 at 03:32 AM. |
|
![]() |
![]() |
![]() |
#20 | |
Registered User
Join Date: Sep 2004
Location: Rancho Santa Margarita - SoCal
Posts: 1,432
|
Re: Best way to grind down welds?
Quote:
Mike |
|
![]() |
![]() |
![]() |
Bookmarks |
|
|