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dhoch14
Samba Member
Joined: March 21, 2005
Posts: 129
Location: Portland, OR
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 Posted: Sat Jun 16, 2007 8:24 am Post subject: how to patch a hole? fiberglass v por 15 questions... |
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:: First time body work newbie warning::
I've got about 10 holes I need to fill, ranging from pin size to golf ball size.
Per reading on the forums, I've got some por 15 and Evercoat fiberglass.
My question is....
Should I fill the holes with fiberglass and then put the por 15 over them? Obviously, I don't think that will stop the rust. Should I spray some rust inhibitor first, then fill, then cover w/ por?
Any help on how to tackle this is mucho appreciato!
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73 Transporter AT w/ Dual Solexs
An east coast bus on the west coast... |
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Tram
Samba Socialist
Joined: May 02, 2003
Posts: 23022
Location: Northwest of Normal
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| Posted: Sat Jun 16, 2007 9:24 am Post subject: |
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First- where are the holes? Floorpan? Body panels?
I'd weld new metal in if you're able on the golf ball sized ones, and on the pinholes, braze them shut and grind them. On the floorpan, it's a structural integrity thing, and on the body the problem you can run into is that fibreglass or other fillers can expand and contract at different rates than the metal, causing cracks in the paint.
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| Just my hands. And a little lube. No tools. |
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Those who can't? Subaru. |
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ivsamhell
Samba Member
Joined: June 12, 2006
Posts: 858
Location: hesperiaCA
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| Posted: Sat Jun 16, 2007 9:36 am Post subject: |
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| weld it up. unless its a boat, glass it up. |
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dhoch14
Samba Member
Joined: March 21, 2005
Posts: 129
Location: Portland, OR
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| Posted: Sat Jun 16, 2007 11:24 am Post subject: |
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thanks all. i do realize that welding new metal in is the BEST way to do it. unfortnately, and I HATE to say this, but I'm sort of "half assing" this project.
couple reasons:
1) time
2) money
3) inexperience with welding
This is just a short-term fix for a poor bus.
just found some more pinholes on the sliding door rocker. awesome!
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73 Transporter AT w/ Dual Solexs
An east coast bus on the west coast... |
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ivsamhell
Samba Member
Joined: June 12, 2006
Posts: 858
Location: hesperiaCA
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| Posted: Sat Jun 16, 2007 6:35 pm Post subject: |
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i'd rather leave the rust than glass it, hell put some duct tape on it  |
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spotco2
Samba Member
Joined: May 09, 2006
Posts: 1161
Location: GA
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| Posted: Sat Jun 16, 2007 9:14 pm Post subject: |
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Get a twisted wire brush wheel and clean it up good.
If I were doing it, I would fiberglass anything I could put a pencil through and anything small just fill with all-metal. All-Metal works like Bondo® but has metal in it instead of plastic.
Sand and finish. Epoxy primer. Paint to match.
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MLTIGGER2
Samba Member
Joined: May 01, 2006
Posts: 1154
Location: Fort Wayne, In
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| Posted: Sun Jun 17, 2007 7:09 am Post subject: |
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Take some welding or body work classes at the local community college and fix her up right  |
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dhoch14
Samba Member
Joined: March 21, 2005
Posts: 129
Location: Portland, OR
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| Posted: Sun Jun 17, 2007 8:39 am Post subject: |
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i do plan to take a welding class....this fall.
as I mentioned in my previous post, I am not at the point of welding so I for other alternatives (yes, of less quality).
I've already grinded away all the surface rust and cleaned the spots of well. I plan to degrease and port 15 any areas I can reach. Otherwise, I will spray some MUST for RUST and then coat the outside with Por 15. Fiberglass over the rest (EverCoat) and then sand/prime/paint.
thanks for the help all.
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73 Transporter AT w/ Dual Solexs
An east coast bus on the west coast... |
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johneliot
Samba Member
Joined: August 29, 2005
Posts: 2195
Location: Chico, CA
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wyattbonk
Samba Member
Joined: July 03, 2007
Posts: 6
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pdjafari
Samba Member
Joined: May 23, 2007
Posts: 127
Location: VA
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| Posted: Sat Jul 07, 2007 9:55 am Post subject: |
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just read this post and now im curious. Could I use the numetal or other metal putty materials to replace my fender nut that rusted out?? I have a golf ball sized rust hole where one of my fender nuts was removed. The entire nut panel around the nut came out and I assumed only welding would suffice. Could I use this stuff for that as well?? If the car is later media blasted and primed, would this stuff come loose???
Same boat, I want to get the car done, next welding course here is in august, hate to wait until then!! Not sure how much a welder would charge anyways to patch up 3-4 small rust holes!! |
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SandSquid
Samba Member
Joined: May 11, 2007
Posts: 300
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| Posted: Sat Jul 07, 2007 11:17 am Post subject: |
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While wire-wheeling away the rust in preparation to remove the old rusted the rear package shelf:
I found many small pin-holes of rust on the wheel well, that go all the way through...
I applied a wire wheel to the "outside" (inside of the wheel well) and got both sides down to bare metal.
I do have a MIG welder but lack experience in this type of work.
A buddy from work (a HT in the Navy) told me:
"Put a copper bar tight up against the the opposite side, and weld them closed and grind it all smooth again, the fills will be stronger than the original metal."
Is it really as simple as this?
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SandSquid
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a.wilson
Samba Member
Joined: January 11, 2007
Posts: 2033
Location: Georgia
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| Posted: Sat Jul 07, 2007 5:33 pm Post subject: |
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| SandSquid wrote: |
I do have a MIG welder but lack experience in this type of work.
A buddy from work (a HT in the Navy) told me:
"Put a copper bar tight up against the the opposite side, and weld them closed and grind it all smooth again, the fills will be stronger than the original metal."
Is it really as simple as this? |
Not sure about it being stronger, or by using a bar or how simple it is, but i've heard that you can use a peice of cut-up copper tin behind a hole and weld it up. The welds will not stick to the copper and gives the weld something to stick w/o going all over the place.
I think that i saw this in an old eastwood co. catalog once. They had these little peices of copper tin called "plates" that you can clamp over the hole, and a spoon type tool that does the same thing. www.eastwoodco.com
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Nintendo Bus
Samba Member
Joined: March 09, 2012
Posts: 9
Location: Stratford Ontario Canada
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| Posted: Wed Apr 17, 2019 1:42 pm Post subject: |
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10 out of 10 buddy. This is a brilliant idea!
| a.wilson wrote: |
| SandSquid wrote: |
I do have a MIG welder but lack experience in this type of work.
A buddy from work (a HT in the Navy) told me:
"Put a copper bar tight up against the the opposite side, and weld them closed and grind it all smooth again, the fills will be stronger than the original metal."
Is it really as simple as this? |
Not sure about it being stronger, or by using a bar or how simple it is, but i've heard that you can use a peice of cut-up copper tin behind a hole and weld it up. The welds will not stick to the copper and gives the weld something to stick w/o going all over the place.
I think that i saw this in an old eastwood co. catalog once. They had these little peices of copper tin called "plates" that you can clamp over the hole, and a spoon type tool that does the same thing. www.eastwoodco.com |
Here’s my crappy patch job on my Westy’s roof. I wish I knew this copper trick. |
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mac2881994
Samba Member
Joined: February 03, 2011
Posts: 17
Location: Woodlawn, TN
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| Posted: Thu Apr 18, 2019 9:58 am Post subject: Re: how to patch a hole? fiberglass v por 15 questions... |
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| I use a two FT long piece of 1/2" copper water pipe that has about six inches on one end smashed flat. It works like a champ and is long enough to reach behind panels and into corners, if needed. |
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pondoras box
Samba Member
Joined: March 22, 2004
Posts: 1740
Location: Eerie PA
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| Posted: Thu Apr 18, 2019 12:21 pm Post subject: Re: how to patch a hole? fiberglass v por 15 questions... |
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You can get copper spoons from harbor freight cheap, they have a rubber handle on them, found in the welding section.
The copper backing keeps you from blowing through the thin steel and build the weld up to fill the hole. The weld will not stick to the copper you simply move it away when you are done. Just a reminder the copper will be really hot!
Clean the rust away as best you can, use the welder to fill the holes from the outside and gradually build up weld material until you have filled the center of the hole, grind, prime, paint, and enjoy.
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