My new favorite toy (Blast cabinet)
03-02-2009, 06:07 PM
#31
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Michele- Thanks for the tips- Fortunately nothing I've done has had significant rust on it so hopefully the exhaust parts I've done won't be affected.
Perhaps an underwire bra would provide better grounding protection.....
Perhaps an underwire bra would provide better grounding protection.....
03-02-2009, 06:47 PM
#32
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When I was very young, I wondered why some of my dates had those foam pads - I didn't realize that they were trying to protect from static shocks!
03-02-2009, 07:18 PM
#33
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You funny too!! The ART of bead blasting.....
03-19-2009, 09:15 PM
#34
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New Project
Rob
I wish I could have done these myself, but one of our guys bead blasted these this morning.
I only wish it hadn't exposed all the poor casting.
Hope all went well installing all your freshened up parts.
I wish I could have done these myself, but one of our guys bead blasted these this morning.
I only wish it hadn't exposed all the poor casting.
Hope all went well installing all your freshened up parts.
03-19-2009, 10:09 PM
#35
Funny this came up just now.
Just finished blasting Tom in Austins cam cover. With all the rain we had last week it took a few days for the humidity to get out of my media.
It's not cleaned up, pulled it out of the cabinet a few minutes ago. I agree on the imperfections. Jim M (I think) has some great filler for those issues.
Just finished blasting Tom in Austins cam cover. With all the rain we had last week it took a few days for the humidity to get out of my media.
It's not cleaned up, pulled it out of the cabinet a few minutes ago. I agree on the imperfections. Jim M (I think) has some great filler for those issues.
03-19-2009, 11:35 PM
#36
Chronic Tool Dropper
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Sean--
Filler to use prior to powder coating?
I predict a weekend with the manifold and covers in paint stripper and locked away in plastic bags. Then a power wash before another paint stripper day. Then another wash, followed by a media blast if necessary. A day of prep. Then on to whatever finish it gets. I was going to use just a high-build primer after the initial chromate spray unless the castimg damage is deep. If I PC, the prep will be different of course. I've never sent used cast parts for PC before, so this is new ground at least for me.
Michelle, you are probably way too young to remember the term "sparking" when on dates. Usually happend when there was no armor or insulation protecting your tenders.
Filler to use prior to powder coating?
I predict a weekend with the manifold and covers in paint stripper and locked away in plastic bags. Then a power wash before another paint stripper day. Then another wash, followed by a media blast if necessary. A day of prep. Then on to whatever finish it gets. I was going to use just a high-build primer after the initial chromate spray unless the castimg damage is deep. If I PC, the prep will be different of course. I've never sent used cast parts for PC before, so this is new ground at least for me.
Michelle, you are probably way too young to remember the term "sparking" when on dates. Usually happend when there was no armor or insulation protecting your tenders.
03-20-2009, 01:03 AM
#37
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I'm pretty sure there's a thread somewhere about Jeannie filling these imperfections with Lab Metal, whatever that is. Or maybe I dreamed it up.
Ah yes: post 81:
https://rennlist.com/forums/928-foru...unchbox-3.html
https://rennlist.com/forums/928-foru...lling-casting-
Ah yes: post 81:
https://rennlist.com/forums/928-foru...unchbox-3.html
https://rennlist.com/forums/928-foru...lling-casting-
03-20-2009, 01:13 AM
#38
Filling prior to rattle canning here.
04-02-2010, 02:26 AM
#39
Nordschleife Master
Bump for some info 
Rob, now that you've had it a year, what are your preferred sizes/types of media?
I just bought one of these same cabinets - will be grabbing a bag of glass beads and a bag of either walnut shells or plastic beads too.
Also, what did you do about the dust/filter side? I'm thinking I'll make up one of these, or buying its commercial equivalent - from the reading I've done, they capture in excess of 80% of the dust, as high as 95% for some woodworking applications. That plus a HEPA filter on the shop vac, and then vent to outside should do it, but open to experienced opinions.
Rob, now that you've had it a year, what are your preferred sizes/types of media?
I just bought one of these same cabinets - will be grabbing a bag of glass beads and a bag of either walnut shells or plastic beads too.
Also, what did you do about the dust/filter side? I'm thinking I'll make up one of these, or buying its commercial equivalent - from the reading I've done, they capture in excess of 80% of the dust, as high as 95% for some woodworking applications. That plus a HEPA filter on the shop vac, and then vent to outside should do it, but open to experienced opinions.
04-02-2010, 03:10 AM
#40
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Hi Hilton-
I have still only used the glass beads in the cabinet so far, Potter's ballotini beads, not sure what mesh it is.
For dust control, I bought a couple of the pre-filter bags that fit inside a shopvac, like these:
http://www.tptools.com/p/1471,52_Vac...asive-Kit.html
So far they've worked well enough that the shopvac still works, haven't destroyed the bearings..... This seems to capture the vast majority of the dust, the biggest mess maker is actually when you open the door after blasting- beads collect in the recesses in the door and then are spilled on the floor. I have gotten in the habit of tapping on the door before opening, but even then there's spillage.
I like the look of that dust deputy setup, might have to pick one of those up.
I have still only used the glass beads in the cabinet so far, Potter's ballotini beads, not sure what mesh it is.
For dust control, I bought a couple of the pre-filter bags that fit inside a shopvac, like these:
http://www.tptools.com/p/1471,52_Vac...asive-Kit.html
So far they've worked well enough that the shopvac still works, haven't destroyed the bearings..... This seems to capture the vast majority of the dust, the biggest mess maker is actually when you open the door after blasting- beads collect in the recesses in the door and then are spilled on the floor. I have gotten in the habit of tapping on the door before opening, but even then there's spillage.
I like the look of that dust deputy setup, might have to pick one of those up.
04-02-2010, 09:05 AM
#41
Burning Brakes
Rob, your coated parts look absolutely amazing. Nicely done!
Xlot, for most applications a moderate/heavy glass bead will take a lot of things off. For rust/heavy coatings I use 46 grit aluminum oxide. I'd say its 20-30% more effective than glass beads. You can also check with your local plastic supplier for .0075" thick mylar. Its a clear, protective film. Then, cut it to the shape of your cabinets glass and apply it with double stick tape. Its what TP tools uses, but they want something rediculous like 10 bucks for 3 sheets IRRC. I make my own. One thing that if often overlooked (didnt' see it mentioned in this thread) is to rotate the tip of your blast gun on occasion. It is a wear item and won't last long with aggressive media. Soda and walnut shells are for cleaning parts already free of paint etc.
Yes, the glass beads will enter your lungs and never, ever come out. PLEASE, everyone where a respirator and use a filter on the cabinet.
Xlot, for most applications a moderate/heavy glass bead will take a lot of things off. For rust/heavy coatings I use 46 grit aluminum oxide. I'd say its 20-30% more effective than glass beads. You can also check with your local plastic supplier for .0075" thick mylar. Its a clear, protective film. Then, cut it to the shape of your cabinets glass and apply it with double stick tape. Its what TP tools uses, but they want something rediculous like 10 bucks for 3 sheets IRRC. I make my own. One thing that if often overlooked (didnt' see it mentioned in this thread) is to rotate the tip of your blast gun on occasion. It is a wear item and won't last long with aggressive media. Soda and walnut shells are for cleaning parts already free of paint etc.
Yes, the glass beads will enter your lungs and never, ever come out. PLEASE, everyone where a respirator and use a filter on the cabinet.
