Blasting heads
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Cotten
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Re: Blasting heads
Dennis!
Probably, but it won't clean much else.
If you have old valves, just drop them in the guides with some tape on the stems, and it will shield seats themselves.
....Cotten
Probably, but it won't clean much else.
If you have old valves, just drop them in the guides with some tape on the stems, and it will shield seats themselves.
....Cotten
-
Cotten
- Senior Member
- Posts: 6937
- Joined: Sun Feb 10, 2002 2:30 am
- Bikes: -
- Location: Central Illinois
- Has thanked: 112 times
- Been thanked: 310 times
Re: Blasting heads
Dennis!
I have four cabinets with different media, so far, so I pick and choose as necessary.
My aggressive cabinet has aluminum oxide, which leaves a healthy mill profile, and quickly eats the carbon around guides, etc.
The glass bead cabinet has a very fine media, so it smooths the mill profile, and gives a brighter finish.
Walnut hulls are then an option, but they are too gentle to do much but clean away some embedded abrasives.
(The steel shot cabinet is predominately for re-texturing repairs.)
There are other media on the market, of course, but I ran out of space for cabinets.
The de-prep is as critical as the blasting!
Prior to a scalding soap scrub with an arsenal of different brushes,
the whole casting is power-brushed with soft abrasive brushes, offered under such brands as "Adalox" or "Nylox".
This brightens castings dramatically, removes embedded particles, and produces a surface that does not grab dirt like an ordinary blasted finish.
Normally internal chambers can then be coated to encapsulate any residual abrasives, but it would burn away from heads.
Good luck!
....Cotten
I have four cabinets with different media, so far, so I pick and choose as necessary.
My aggressive cabinet has aluminum oxide, which leaves a healthy mill profile, and quickly eats the carbon around guides, etc.
The glass bead cabinet has a very fine media, so it smooths the mill profile, and gives a brighter finish.
Walnut hulls are then an option, but they are too gentle to do much but clean away some embedded abrasives.
(The steel shot cabinet is predominately for re-texturing repairs.)
There are other media on the market, of course, but I ran out of space for cabinets.
The de-prep is as critical as the blasting!
Prior to a scalding soap scrub with an arsenal of different brushes,
the whole casting is power-brushed with soft abrasive brushes, offered under such brands as "Adalox" or "Nylox".
This brightens castings dramatically, removes embedded particles, and produces a surface that does not grab dirt like an ordinary blasted finish.
Normally internal chambers can then be coated to encapsulate any residual abrasives, but it would burn away from heads.
Good luck!
....Cotten