Body fillers

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davedyer79

Copper - Posts: 178

Joined: February 18, 2004

Location: United States

Posted: September 22, 2005 at 10:56 AM / IP Logged

I have tried sanding on Bondo during its "semi-hardened" stage (i hope newbies don't get the wrong impression of this quote.) I find it clogs the paper to quick, wasting it. I have used everything, and will agree with almost all the others on this post, Rage is the BEST. Extreme for thin, finishing coats and Gold for building and first stage of smoothing. Rage Extreme seems better at reducing pinholes than Rage Gold, but Rage Gold is far superior than Extreme when it comes to sanding quickly. Also, the cheese graters work great on flat surfaces. I love these:

http://www.eastwoodco.com/jump.jsp?itemID=517&itemType=CATEGORY&iMainCat=516&iSubCat=517&page=2

they flex with the curves of a amp rack or sub enclosure and allows you to smooth quickly with 40-80 grit.

Another trick to lesson sanding time: finish your sanding at 80 grit, just spray a good, thick coat of primer on. Don't worry about the runs, those can sand out easy. Primer will be the easiest thing you will ever sand. Why worry about sanding body filler with 400-600 when you can wet sand primer with that and save about 75% the time. Primer will fill the pinholes, sanding scratches, etc and give you a mirror surface for base/clear.

davedyer79

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5150azn

Silver - Posts: 584

Joined: June 21, 2004

Location: United States

Posted: September 22, 2005 at 12:49 PM / IP Logged

Hey do you guys know the trick with mdf? You just shape the mdf to the shape of file you need then you glue the sand paper to it and bam you have a custom tool. Thats a 310 motoring trade secret so don't say I never contributed anything to this forum.

Tell the Snap-On guy I'm not here!

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mi_what

Copper - Posts: 208

Joined: April 20, 2005

Location: United States

Posted: September 22, 2005 at 3:12 PM / IP Logged

I did that MDF trick...worked great; but, I evolved it a little for my comfort. So here goes the mystery secret:

Take a peice of old fabric (fleece works well with this) fold it up a couple of times just enough to create 1/4" thinkness max., lay it on the bottom of the sanding block (of MDF), then staple gun the sand paper to the sides front and back of the MDF.

What this does is creates a soft spot for the sandpaper to curve with the shape of your creation and not gouge out the filler too instantly.

Oh, and that "semi-hardened" stage takes a little bit of getting used too. It does work though. Just a thought.

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Body fillers

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