Restoration and General Tech
> Paint and Body Q&A
User Name

Paint and Body Q&A Bodyshop tips, tricks, Q&A in here.

sponser links

Thread Tools
Old 10-22-08, 07:04PM   #1
prodigal son
Zedo's Avatar
Join Date: Apr 2006
Location: USA
Posts: 4,091
Default best undercoats for paint job-self etch/epoxy, urethane 2K, polyester, or DTM epoxy?

paint technology is really moving ahead quickly, like everything else- a few years back the tried & true undercoat system for bare metal was 2K self etching zinc primer (the green/yellow stuff, zinc base with acid reducer/activator), followed by 2K epoxy (paint and catalyst that hardens, that can be thinned 10% to make it flow like a sealer), followed by a primer surfacer to fill any sand scratches, then BC/CC or single state color

then urethane primers started being sold that could go right over bare metal, and also had somewhat good filling properties for bodywork/filler sandscratches, but had to be built up in 2-3 or more coats

now, they have polyester spray fillers that fill .010"-.012" sand scratches, and have the self etch built right into them- and use a hardener catalyst- this stuff sounds really amazing- you can sandblast an entire panel or car to bare metal, spray it with this stuff, it fills in all the imperfections- sand it, and put your base color or single stage paint right on the primer- done

.012" filling capability means, it will fill in 36/40 grit sandscratches- that means you can air board the seams on a quarter panel patch, then spray it with the poly, and then 220-400 it out and paint it- that saves a LOT of sanding time, and recoating

basically it's a one shot undercoat the etches, seals, and fills the surface- eliminating the need for self etch/epoxy/primer surfacer steps- it's "all in one"

one brand is actually called "ALL-YOU-NEED" and made by Claussen's- this stuff is pricey over $100/gallon w/activator- but I'm told it will fill in one pass, what other primer/surfacers take 3 passes to do


another brand is the well known Feather Fill brand, and it's called "Slick Sand"


Now I'm also hearing about DTM or "direct to metal" epoxy primers that are hybrids that build/fill more than old epoxies do- yet another product that will go from bare metal to paint and fill all in one shot

question- has anyone used these new high-build, high-tech all-in-one polyester primers, if so how did they work out ?
Zedo is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
yo Marty-question- urethane vs. epoxy primer question ? zedo Paint and Body Q&A 11 01-26-06 03:22PM

All times are GMT -3. The time now is 11:36AM.

Featured Ads
Ken's Speed & Machine
Mayhem Turbocharging

Carter Cryogenics.  What can we freeze for you?

Pacific Performance Racing

Central Virginia Machine Service.  Home of the Injun Engine!

All Pontiac Engine Kits

Larry's Auto Machine.  Full serivce auto, marine machine shop, domestic and foreign.

Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
2001 - 2007 PontiacZone.com
Page generated in 0.12005 seconds with 15 queries