 Transmission Blasting, Aluminium Oxide 100 grit OK |
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| rstover |
 Nov 28 2018, 08:34 PM
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#1
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Member  Group: Members Posts: 136 Joined: 15-November 11 From: Austin, TX Member No.: 13,785 Region Association: Southwest Region  |
I recently had the fan housing cerakoted and now I want to do the transmission. On the fan housing I removed all the grease and oil and the shop that applied the cerakote blasted it withe 200 grit aluminium oxide in a cabinet and it came out great.
I will get all the grease and oil off the transmission, but the blasting will be done with 100 grit aluminum oxide outside of a cabinet. I believe I have protected everything but was a little concerned about 100 grit being to course.  |
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| toolguy |
Nov 29 2018, 09:44 AM
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#2
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Senior Member Group: Members Posts: 1,275 Joined: 2-April 11 From: San Diego / El Cajon Member No.: 12,889 Region Association: Southern California 
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I wouldn't use sand. . I doubt that any tape or sealing will keep all
of the abrasive out. . I'd go with plastic beads if you can't do the soda or dry ice, which would be my first choice for an assembled tranny. . However, all of this is a substitute for doing it right. . pull the trans apart, blast it, then put in in a vibrator ceramic tumbler, and you'd have a perfect original finish . . . This is bare Mag, no paint. . it was then coated with an Aerosapce metal protectant from Boeing called Boshield,T-9. It is similar to WD40, but dries to a waxy protectant finish that penetrates the pores of the mag. . I did mine 8 years ago and it looks the same today. Attached image(s) 
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| ValcoOscar |
Nov 29 2018, 10:37 AM
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#3
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Garage Life Group: Members Posts: 2,482 Joined: 19-November 13 From: SoCal Member No.: 16,669 Region Association: Southern California 
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QUOTE(toolguy @ Nov 29 2018, 07:44 AM)  I wouldn't use sand. . I doubt that any tape or sealing will keep all of the abrasive out. . I'd go with plastic beads if you can't do the soda or dry ice, which would be my first choice for an assembled tranny. . However, all of this is a substitute for doing it right. . pull the trans apart, blast it, then put in in a vibrator ceramic tumbler, and you'd have a perfect original finish . . . This is bare Mag, no paint. . it was then coated with an Aerosapce metal protectant from Boeing called Boshield,T-9. It is similar to WD40, but dries to a waxy protectant finish that penetrates the pores of the mag. . I did mine 8 years ago and it looks the same today. Great input. (IMG:style_emoticons/default/agree.gif) Stay away from sand. I have no experience with plastic beads but sounds promising. Walnut shells is messy but works terrific. If and when I redo a trans, I'm trying Boshield T-9, if I can find it. I used a 30-60 Garnet yesterday to blast some doors for a fellow SoCal member @Steve Oscar |
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Posts in this topic
rstover Transmission Blasting Nov 28 2018, 08:34 PM
mepstein I would only soda blast unless you intend to overh... Nov 28 2018, 08:58 PM
rstover
I would only soda blast unless you intend to over... Nov 28 2018, 09:11 PM wes I cleaned mine up getting rid of all the oily mess... Nov 28 2018, 09:08 PM IronHillRestorations I've only used crushed walnut shells for whole... Nov 28 2018, 09:12 PM rstover
I've only used crushed walnut shells for whol... Nov 28 2018, 09:46 PM mepstein Dry ice would be another way to go but I wouldn’... Nov 29 2018, 06:53 AM Dr Evil
I wouldn't use sand. . I doubt that any tape... Nov 29 2018, 01:48 PM brant I agree with all of the above comments
to the OP
... Nov 29 2018, 10:18 AM rstover Thanks for all the responses. I have spent about ... Nov 29 2018, 06:48 PM cary We do quite a few gear boxes at Rothsport. 1 to 2 ... Nov 29 2018, 11:02 PM |
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