07-25-2013, 09:42 PM | #1 |
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Blast Cabinets are a blast!
30 minutes with a scrub brush and parts cleaner vs. 15 minutes in a cheap HF blast cabinet....
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The Following User Says Thank You to Tom M For Your Post: | ehall (08-12-2013) |
07-26-2013, 12:20 AM | #2 |
Thinking outside da' bun
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thats amazing.
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07-26-2013, 09:02 PM | #3 |
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I love my el cheapo sand blaster. I bought a bag of the finest sand they had. It basically leaves Al alone.
Regards, doug 86 951 (http://pcaucr.org/media/image-galler...ll&gallery=224) 01 E320 (W210) 4matic Wagon (http://www.benzworld.org/forums/w210...body-do-2.html) 00 540i-6 (http://forums.bimmerforums.com/forum...hp?albumid=976) 94 855 turbo Wagon (sold in 09) 85 535i-5 (sold in 07) 76 300D (sold in 92) 83 944 (sold in 86) I apparently only buy cars designated by numbers |
07-26-2013, 11:10 PM | #4 |
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Nice ! what are you blasting with... soda.. sand.. nut shells ?
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07-26-2013, 11:34 PM | #5 |
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That was good 'ol harbor freight glass beads. I may try aluminum oxide mixed in soon to see if I can get a slightly less shiny surface. I don't really know for sure what these parts were like brand new in the 80's but my sense is that the glass beads are giving it a slightly more reflective/shiny look than they originally had. Although looking at those pictures, it looks pretty darn close to new I'd say...
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07-27-2013, 01:53 AM | #6 |
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This thread is once again proof that doing work good is 50% having the right tools. You could scrub that cover for a week with bristle brushes and industrial cleaner and it might look 10% better. The right tool does it in 20 minutes however and makes it factory new.
Thats working smarter, not harder!
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UDPride's Footnotes 1. My mind is a whirl of transient thoughts streaming through a constant vapor of invention. 2. The $10.6B lost on GM stock could have built 53,500 homes at $200,000 each for our wounded veterans. 3. I want the government to basically leave me alone. Don't call me, I'll call you. 4. Unofficial Reutterwerk Food Critic. |
07-27-2013, 02:07 AM | #7 |
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Wash it, wash it, then wash it again. Blast it with clear air, then wash it again.
Each grain of Silica sand has 16 facets. I've had a cabinet for ages. It's put away now, but when you gotta have it, you gotta have it. I did most all my 928 engine parts in there except the big stuff which went to the machine shop tank.
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07-27-2013, 12:48 PM | #8 |
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Spot on post! Although the cabinet just takes a few minutes, I've been known to spend countless hours cleaning parts even after blasting. If oil can touch it, it needs to be clean to the metal. If I could assemble in a clean-room, I would. Here are a couple assembly pictures highlighting the point...
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07-27-2013, 08:29 PM | #9 |
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Balance shaft cover? Bah, those never leak.
mmuuuuuaaaahahahahhahahahhahahahaaa!!!
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07-27-2013, 10:29 PM | #10 |
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I soda blasted a lot of parts on my recent rebuild. The soda is expensive, but it's an excellent technique because you can dissolve the soda away with water afterward.
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07-27-2013, 11:00 PM | #11 |
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What kind of soda?
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07-28-2013, 02:26 PM | #12 |
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07-31-2013, 07:23 AM | #13 | |
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Quote:
In Australia, most of the garnet you buy must be dissolvable in water for health issues.
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07-31-2013, 10:14 AM | #14 |
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What clean up do you need perform to make sure your contact surfaces. doesnt that piece have a press in bearing.
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08-01-2013, 03:30 PM | #15 |
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Indeed they are!
I use walnut shells if the parts just need cleaning and aluminum oxide if they need paint removed. I did have some glass bead, but since most of the stuff I'm blasting I powdercoat after, I avoid glass bead since it likes to embed itself into aluminum more than other media. Soda works well too, but it does get expensive. They say you can't use a normal media blaster with soda, but I never had any problems running it in mine. Nor did I reusing the soda. It's definitely a lot more susceptible to moisture though so make sure you have good dry air (I use a refrigerated air dryer). Here's my cabinet (I started with a small harbor freight one and a 20gal compressor). I'm currently using a siphon feed gun as I want to hook up my 90lb pressure pot blaster to a footswitch so I can use it in this cabinet. Previously I used the pressure pot blaster in the HF cabinet, but it was a pain to have to take my hands out to manually turn on/off the blaster. And my compressor/air dryer (80gal 2stage; good for ~18cfm):
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