 The Cost of "DIY" Media Blasting..., or Should I buy the equipment for only one car project... |
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| 73Phoenix20 |
 Oct 9 2007, 11:35 AM
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Member  Group: Members Posts: 334 Joined: 15-June 05 From: Michiana Member No.: 4,283  |
I know some of you folks will have some advise for me on this subject...
I need answers to several questions regarding media blasting... 1. Is the 'Pressure Pot" Blast System significantly superior to the gravity fed system? I can get either one at Harbor Freight (and prolly other places) for about $50.00 difference, which is trivial, IF the Pressure Pot system really works better... 2. I can get Aluminum Oxide media for $40 per 25lb box... how much surface area will this cover, assuming I am removing the factory paint down to bare sheetmetal? 5 square feet? 10 square feet? More? For an easy example, will 25 lbs strip the hood of a 914? Or maybe the hood and trunk (top surface only)? 3. I can get crushed walnut shells for about $20.00 per box, but i assume they are much less effective? How much less? Will it take twice as much in walnut shells vs. aluminum oxide? 4. Luckily, I only need to strip the exterior, as the interior is in fantastic shape, and I am repainting to original color. What is the best material to use to mask areas that I don't want to get "accidentally" blasted? Heavy duct tape? Multiple layers of heavy plastic sheeting? 5. Will Aluminum Oxide risk warping of the sheet metal due to heating? I understand walnut shells won't warp panels? True or not? If they are only marginally less effective, and half the price, I guess I will go with the walnut shells? Prolly more, but that is all I can think of right now! Thanks folks! |
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| Brian Mifsud |
Oct 9 2007, 01:11 PM
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Mechanical Engineer Group: Members Posts: 981 Joined: 3-March 03 From: Penngrove, CA Member No.: 384 Region Association: None |
When you are ready to media blast, rent a monster construction-site compressor, like this guy did:
Shop Talk Forums "Race Look" Beetle I've used the gravity style hopper and they are horrible if you don't have enough air volume. One day's rental on the big 50HP compressor units is low if you prepare everything and use the whole workday to get it all done. I'd stick to walnut shells because there is no chemical issue to deal with, and it won't make a moon surface. With enough horsepower on the compressor, you WILL get all the paint and rust off. |
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Posts in this topic
73Phoenix20 The Cost of "DIY" Media Blasting... Oct 9 2007, 11:35 AM
Travis Neff Aluminum oxide is VERY aggressive, get ready for a... Oct 9 2007, 11:45 AM rhodyguy if you don't have one, the biggest exspence wi... Oct 9 2007, 12:11 PM 73Phoenix20 I'm running a 1.5 HP Compressor on a 250 Gallo... Oct 9 2007, 01:19 PM Vacca Rabite If you trap the media, you can generally run it th... Oct 9 2007, 01:24 PM rhodyguy that compressor rental is a good idea. you know yo... Oct 9 2007, 01:31 PM Brian Mifsud Baking soda is a "salt", so you should b... Oct 9 2007, 01:33 PM 73Phoenix20 Hmmm... I like the BIG Rental Compressor idea, and... Oct 9 2007, 01:45 PM rhodyguy with the huge volume you can move up to a presure ... Oct 9 2007, 01:53 PM Richard Casto I am going through this right now. I had initially... Oct 9 2007, 04:23 PM
Wilhelm I have generally had better success with pressure ... Oct 9 2007, 05:20 PM 73Phoenix20 Hey, all great info! I will definitely want t... Oct 9 2007, 06:30 PM majkos :popcorn: Yeah! Keep them coming! :headban... Oct 9 2007, 06:42 PM scotty b FYI soda blasting requires a completely different ... Oct 9 2007, 07:13 PM 73Phoenix20 I'm thinking of getting one or two of those di... Oct 9 2007, 08:46 PM Jeff Hail Easy home blasting method:
If you have one of thos... Oct 9 2007, 10:03 PM 73Phoenix20 A Canopy! Great idea! I bought one a cou... Oct 10 2007, 08:23 AM Krieger914 We used to blast the airframes of B-25's with ... Oct 10 2007, 10:05 AM |
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