Author	[Modern View]
Duane WI 01-01-2013 08:20:42 173.202.200.109 Report to Moderator	I have been working on a 1947 IHC Pickup. My plan was to strip the paint (using wire wheel)from the body parts, weld in the patch panels (bottom of fenders and such) and work out the dents. Since my shop isn't heated I was then going to bring them into the basement, treat with phosphoric acid and do the bondo work. My shop isn't heated so painting is out until May. So right now I have a bunch of body sheet metal parts in the basement ready for bondo but after reading several posts about primer before bondo I am not sure this is a good idea. What are your thoughts? It is 2 degrees this morning so my desire to work in the shop is definitely low but I want to keep making progress. No way my basement is well ventilated enough to even think about painting. Thanks for your help. [Reply]   [No Email]
MikeinKy 01-20-2013 16:10:48 184.45.29.248 Report to Moderator	Re: Bondo Before Primer Question in reply to Duane WI, 01-01-2013 08:20:42   Bondo should go on bare metal. It doesn't stick to paint as well. [Reply]  [No Email]
neblinc 01-16-2013 18:23:06 69.80.113.82 Report to Moderator	Re: Bondo Before Primer Question in reply to Duane WI, 01-01-2013 08:20:42   And remember, body filler is pretty potent smelling and will stink up the whole house. Randy [Reply]  [No Email]
MO8N4ME 01-15-2013 10:58:22 72.172.196.40 Report to Moderator	Re: Bondo Before Primer Question in reply to Duane WI, 01-01-2013 08:20:42   Here is an excellent post on body fillers from the "ALPHA BULLETIN BOARD" This should at least define some things for you. Quoting Removed, click Modern View to see [Reply]  [No Email]
Mike M 01-15-2013 08:00:36 24.140.0.120 Report to Moderator	Re: Bondo Before Primer Question in reply to Duane WI, 01-01-2013 08:20:42   I would use all metal by USG ? it is an aluminum filled body filler. Goes on good over sandblasted bare metal and sticks really good too. I have even patched gas tanks with the stuff. [Reply]  [No Email]
Chief 83 01-11-2013 19:15:25 24.21.76.219 Report to Moderator	Re: Bondo Before Primer Question in reply to Duane WI, 01-01-2013 08:20:42   Put a little fiberglass resin in the bondo. Mix it in when you put in the hardener. Add enough that the bondo is easily spread. You don't need to use any more hardener than you normally would. This works great and dries in about the same time as regular bondo. I've never added too much but I guess you could. Don't want to make it runny. Really helps in the cooler weather. [Reply]  [No Email]
Duane WI 01-01-2013 10:25:32 173.202.200.109 Report to Moderator	Re: Bondo Before Primer Question in reply to Duane WI, 01-01-2013 08:20:42   At this point I have all sorts of time to wait between coats to sand. My basement is about 55F. The can of bondo I have says 45F. I live in Wisconsin so humidity is a concern. Thanks for the advice. [Reply]  [No Email]
MO8N4ME 01-03-2013 06:16:43 72.172.196.40 Report to Moderator	Re: Bondo Before Primer Question in reply to Duane WI, 01-01-2013 10:25:32   Quoting Removed, click Modern View to see From what you say here, I think you'd be OK temperature wise. You might want to check manufactures labels, cause you might have a problem with bondo over phosphorous. If you are going to bondo right away, I'd clean the area you are going to work, down to good clean bare metal. FWIW, I done bondo work in body shops that were colder than 55F. Didn't have a choice. Far as I know, it never fell out. LOL [Reply]  [No Email]
Stephen Newell 01-01-2013 09:35:14 63.25.166.157 Report to Moderator	Re: Bondo Before Primer Question in reply to Duane WI, 01-01-2013 08:20:42   The only reason primer is recomended before bondo is the primer will protect from rust better. If you were to get a nick to the metal right next to the bondo, water could travel under the bondo and rust a hole where the bondo is. Its pretty unlikely to happen and if you keep nicks like that repaired you wouldn't have a problem with rust anyway. Its the person that once has a vechile is painted never touches it again that gets in trouble. If a nick occured on a vehicle that was epoxy primed and not tended to the rust would be isolated to the nick and not spread. Bondo is not real good to work with in winter either. Unless you can get your basement 75 to 80 degrees you should allow a lot more drying time for the bondo to cure. Otherwise you can fix a dent, sand it flat and when it cures it can shrink on you bringing the dent back. [Reply]  [No Email]
CNKS 01-01-2013 09:34:46 216.144.104.128 Report to Moderator	Re: Bondo Before Primer Question in reply to Duane WI, 01-01-2013 08:20:42   Where do you live? In a dry climate it is not a problem, people in humid areas say it can be a problem. I have a heated shop in a dry climate and have 0 problems with rust--I currently have parts that have been bare metal for over 6 months, there is no rust on them or in them. I don't recommend doing body filler in your basement -- with no circulation you will have fine bondo dust everywhere when you sand it, unless you have a way to keep it cleaned up. It can also get in your furnace and get into your living area, if a gas or electric furnace be sure you have a good clean filter and wear a charcoal mask with dust filters. [Reply]  [No Email]