Guest spaceman Posted July 24, 2009 Share Posted July 24, 2009 Afternoon all. Looking to smooth my front and rear bumpers to remove the trim recess at the top. Can I just use bumper fill and plastic primer or would I be better off plastic welding and filling? Thanks Quote Link to comment Share on other sites More sharing options...
Guest dee1orean Posted July 30, 2009 Share Posted July 30, 2009 If you use bumper filler it could prove quite expensive, Plastic welding would be the ideal course of action, However, when I did mine i used a 50/50 mix of regular polyester filler and fibreglass filler, this mix gives a really strong yet flexible filler though it does take a little longer to harden. Also make sure you key up the inside and the outside of the recess with some 320grit paper as this will give a good surface for the filler to stick to. Good luck!!! Jez. Quote Link to comment Share on other sites More sharing options...
Guest tacha_maree Posted July 30, 2009 Share Posted July 30, 2009 we ground outh the recessess and used fiberglass filler with a skim of filler over the top. as said make sure everythings keyed up. dont excpect itto be a quick job took hours to get ours perfect. Quote Link to comment Share on other sites More sharing options...
Guest clacky Posted July 30, 2009 Share Posted July 30, 2009 Yep, i did the same as Tacha, used Isopon Fibreglass P40 for the main filler and then scimmed the top with Isopon P38 Both products sand down real easy and the P38 goes over the top of the P40 real nice. Don't overfill with the P40 when filling the gap, let the product rest just below the level line and then skim the top with the P38 Quote Link to comment Share on other sites More sharing options...
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