Hello! Log in or Register   |  Help  |  Donate  |  Buy Shirts See all banner ads | Advertise on TheSamba.com  
TheSamba.com
 
Grinding the welds smooth
Forum Index -> Body/Paint Share: Facebook Twitter
Reply to topic
Print View
Quick sort: Show newest posts on top | Show oldest posts on top View previous topic :: View next topic  
Author Message
RLFD213
Samba Member


Joined: January 21, 2009
Posts: 325

RLFD213 is offline 

PostPosted: Sun Jul 05, 2015 4:56 pm    Post subject: Grinding the welds smooth Reply with quote

So I have checked the forums and you tube but still can't get my welds to grind smooth so I can finish. What I do is grind the weld down with a grinding wheel and then use the green 36 grit rolac disc to finish but it still doesn't look like it's done. Any other tips or videos. Thanks
Back to top
View user's profile Send private message Gallery Classifieds Feedback
A Avina
Samba Member


Joined: March 31, 2007
Posts: 274
Location: SantaAna Calif
A Avina is offline 

PostPosted: Sun Jul 05, 2015 5:38 pm    Post subject: Reply with quote

Have you tried a bandfile belt sander?I have used one with success to work welds down. You can get one for a reasonable price from Harbor freight.
Back to top
View user's profile Send private message Send e-mail Classifieds Feedback
theKbStockpiler
Samba Member


Joined: July 07, 2012
Posts: 2316
Location: Rust Belt
theKbStockpiler is offline 

PostPosted: Mon Jul 06, 2015 12:11 pm    Post subject: Reply with quote

Cut off discs are made from finer stones than grinding discs. Anything milder than a rotoloc disc is not going to achieve anything is it? Confused
_________________
My beetle is not competing with your beetle. I have the yellow beetle in my town. There is a red one, a green one ......
Use all safety devices including a mask.Smile
Back to top
View user's profile Send private message Gallery Classifieds Feedback
marklee
Samba Member


Joined: March 24, 2009
Posts: 821
Location: Flintshire, North Wales
marklee is offline 

PostPosted: Mon Jul 06, 2015 2:37 pm    Post subject: Reply with quote

I use these on an angle grinder

https://www.machinemart.co.uk/shop/product/details...tAodfGQMYA
_________________
CGLI qualified body repair and refinish tech
CGLI qualified motor repair tech
Qualified automotive Glass installer
Motor Insurance Repair and Research Centre,Thatcham, Advanced Vehicle Damage Estimator.
Police qualified vehicle examiner
Police Class 1 High performance, pursuit trained Advanced driver
Back to top
View user's profile Send private message Send e-mail Facebook Gallery Classifieds Feedback
buguy
Samba Member


Joined: November 17, 2003
Posts: 4915
Location: Port Orange, FL
buguy is offline 

PostPosted: Tue Jul 07, 2015 8:10 pm    Post subject: Reply with quote

36 grit roloc should be just fine. Clean it with some wax and grease remover and skim it with some fiberglass reinforced filler. Bondo/primer as usual.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
[email protected]
Samba Member


Joined: June 02, 2011
Posts: 1593
Location: Louisville, ky
ptjjb@yahoo.com is offline 

PostPosted: Tue Jul 07, 2015 8:12 pm    Post subject: Reply with quote

marklee wrote:
I use these on an angle grinder

https://www.machinemart.co.uk/shop/product/details...tAodfGQMYA


Yes, those flappy wheels on an angle grinder are awesome.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
buguy
Samba Member


Joined: November 17, 2003
Posts: 4915
Location: Port Orange, FL
buguy is offline 

PostPosted: Tue Jul 07, 2015 8:17 pm    Post subject: Reply with quote

Just be careful. Some of those flappy wheels will actually put a polish on the metal. You want it rough as shit so the filler will have a good mechanical bite on the surface.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
O2COOLED
Samba Member


Joined: May 22, 2007
Posts: 452
Location: Pac NW
O2COOLED is offline 

PostPosted: Sun Jul 19, 2015 2:30 am    Post subject: Reply with quote

This may be the thread closest to my problem. Whoever did the welding of the pan for the PO of my Ghia left a lot of ugly weld drips in the underside. I would like to clean them out not as well as if it was on the body but decent enough so it won't be too obvious after spraying with undercoat or rust bullet coating. Would appreciate your suggestions.
_________________
"Sometimes people forget they signed up to a HELP & SHARE Forum not a pissing contest"

"At my age time is too short to respond to people with short minds"

Current: '69 Ghia Coupe
VW History:'63 Bug;'70 Bug;'73 412;'83 Rabbit;'86 Golf;'76 Fat Chick; 67 Ghia Coupe; '70 Bug
Back to top
View user's profile Send private message Gallery Classifieds Feedback
RareAir
Samba Member


Joined: May 11, 2002
Posts: 14576
Location: 18 miles North of the border
RareAir is offline 

PostPosted: Sun Jul 19, 2015 8:09 am    Post subject: Reply with quote

O2COOLED wrote:
Whoever did the welding of the pan for the PO of my Ghia left a lot of ugly weld drips in the underside. I would like to clean them out not as well as if it was on the body but decent enough so it won't be too obvious after spraying with undercoat or rust bullet coating. Would appreciate your suggestions.


If you have a grinder, a 4-1/2 inch 36grit flap wheel works wonders. They're a little expensive ($4+ each) but they get the job done with top notch results
Back to top
View user's profile Send private message Gallery Classifieds Feedback
O2COOLED
Samba Member


Joined: May 22, 2007
Posts: 452
Location: Pac NW
O2COOLED is offline 

PostPosted: Sun Jul 19, 2015 3:56 pm    Post subject: Reply with quote

Great, yes I have a grinder and will check the 4-1/2 inch 36grit flap wheel. If I'm lucky I may even have it in my tool chest. Thanks RareAir!
_________________
"Sometimes people forget they signed up to a HELP & SHARE Forum not a pissing contest"

"At my age time is too short to respond to people with short minds"

Current: '69 Ghia Coupe
VW History:'63 Bug;'70 Bug;'73 412;'83 Rabbit;'86 Golf;'76 Fat Chick; 67 Ghia Coupe; '70 Bug
Back to top
View user's profile Send private message Gallery Classifieds Feedback
theKbStockpiler
Samba Member


Joined: July 07, 2012
Posts: 2316
Location: Rust Belt
theKbStockpiler is offline 

PostPosted: Sun Jul 19, 2015 4:17 pm    Post subject: Reply with quote

I use a pneumatic 3' cut off tool or a Harbor Freight electric version for $25. The HF model is well worth the money but if you overload it, it trips a circuit breaker you can reset from the outside. You just have to get used to how much you make it work.
_________________
My beetle is not competing with your beetle. I have the yellow beetle in my town. There is a red one, a green one ......
Use all safety devices including a mask.Smile
Back to top
View user's profile Send private message Gallery Classifieds Feedback
O2COOLED
Samba Member


Joined: May 22, 2007
Posts: 452
Location: Pac NW
O2COOLED is offline 

PostPosted: Mon Jul 20, 2015 2:06 am    Post subject: Reply with quote

Good, thanks. I also have a cut off tool from HF.
_________________
"Sometimes people forget they signed up to a HELP & SHARE Forum not a pissing contest"

"At my age time is too short to respond to people with short minds"

Current: '69 Ghia Coupe
VW History:'63 Bug;'70 Bug;'73 412;'83 Rabbit;'86 Golf;'76 Fat Chick; 67 Ghia Coupe; '70 Bug
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Display posts from previous:   
Reply to topic    Forum Index -> Body/Paint All times are Mountain Standard Time/Pacific Daylight Savings Time
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

About | Help! | Advertise | Donate | Premium Membership | Privacy/Terms of Use | Contact Us | Site Map
Copyright © 1996-2023, Everett Barnes. All Rights Reserved.
Not affiliated with or sponsored by Volkswagen of America | Forum powered by phpBB
Links to eBay or other vendor sites may be affiliate links where the site receives compensation.