randx0 Posted April 25, 2011 Posted April 25, 2011 I am fabricating a front bumper for a Vw golf I got the shape I want but am worried about using glazing putty to fill pinholes. the balsa foam sands so easily I am worried about losing some of the finer details. any other related tips on working with this or other similar products will be appreciated. I will post pics later. Thanks in advance.
biscayne63 Posted April 26, 2011 Posted April 26, 2011 Hi, after you get the shape you want with the foam, primer it with high build primer. Fill pinholes with some of the primer sprayed into a cup, use a toothpick to apply the primer to the pinholes. Brian
MikeMc Posted April 27, 2011 Posted April 27, 2011 go to an r/c plane shop....over by the "dope" they will carry a sanding sealer. It will be compatible with "dope"..which is painted over paper on airplanes to form the skin. I used to have some by pactra....its just a memory now
randx0 Posted April 27, 2011 Author Posted April 27, 2011 (edited) Thank you for your suggestions,I started with the high build primer and followed it up with glazing putty that should do the trick for this project. however after trying it out I think I will be making use of this stuff more often and the sanding sealer stuff sounds like just the ticket(also sounds like it will be smelly). I have to say the front bumper was the number one thing holding this build back and would have been next to impossible to get the same results with plastic and what ever other fillers/putties I have on hand . I think just getting it shaped and carved out then sanded only took about an hour.I will add some more pictures later so those who may be interested can see the results. thanks again! Edited April 27, 2011 by randx0
Corvette.Jeff Posted May 1, 2011 Posted May 1, 2011 whats balsa foam? it looks like itd be good to make custom bodykits and stuff.
randx0 Posted May 1, 2011 Author Posted May 1, 2011 On 5/1/2011 at 5:33 AM, Corvette.Jeff said: whats balsa foam? it looks like itd be good to make custom bodykits and stuff. Balsa foam and other materials like it are basically a foam that you can cut and sand to shape similar to wood but much easier to work with . you can get it at art supply stores like Blicks. it comes in sheets like I have pictured or in cubes about 3 or four inches tall. there are other companies that make higher quality and more specific hardness and less pinholes. the major drawback to the balsa foam in this instance is the pinholes but it isn't difficult to rectify.
62rebel Posted May 5, 2011 Posted May 5, 2011 what adhesive/solvent is used to hold it together or to a standard styrene body? the stuff sounds great for imagineering.....
randx0 Posted May 5, 2011 Author Posted May 5, 2011 (edited) On 5/5/2011 at 12:32 AM, 62rebel said: what adhesive/solvent is used to hold it together or to a standard styrene body? the stuff sounds great for imagineering..... I used two part epoxy on this one.I epoxied a rectangle to the front fascia area and cut,trimmed, sanded,filed,etc.until I got a shape that worked.I think next time I will drill holes before shaping for driving lights or air inlets or both. the most useful tool was a course/medium sanding stick. this is my first time using this stuff but I see a lot of potential . Edited May 5, 2011 by randx0
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