SOHC.co.uk Forums > CB750
Painting Crankcases
Trigger:
--- Quote from: Sgt.Pinback on November 21, 2017, 03:04:55 PM ---
--- Quote from: mike the bike on November 20, 2017, 05:23:26 PM ---Never heard of ice blasting, I've just googled it. Most intriguing I must say.
--- End quote ---
You call it vapour blasting.
Works great.
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Vapour blasting is glass bead and water ;) ice blasting is dried ice ;D
mike the bike:
Not a fan of vapour blasting, having an engine trashed my some stray glass beads lurking somewhere. Ice blasting sounds far less risky.
Trigger:
--- Quote from: Mr_Sheene on November 21, 2017, 04:34:30 PM ---I know marginally less than the square root of nothing about engineering but I love the internet. Vapour blasting, also known as wet blasting or liquid honing uses water and an abrasive medium blasted at the component. I think that these are very small glass or plastic beads. The water buffers and lubricates the particles on impact allowing fine finishes to be produced without damaging the component. I was going to use that until I was directed towards ‘Ice Blasting’, which uses dry ice that evaporates on contact taking the muck with it (it says in the blurb) and leaves no residue to block oil-ways etc. I was happy with that until I read Triggers entry about acid baths and ovens to get oil out of metal, so now I am doing more research. Thanks for the input though as it is the only way that the job will get done. My first entry asked if anyone knew of companies for cleaning and painting that can be recommended in south-east England. The request still stands, although if they are that rare I will consider going further afield.
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Ice blasting was introduced for the removal of graffiti from walls and was promoted to local councils who use them until they found out that the running cost was well over the top, and went back to chemicals. The ice blasting sales people had no one else to promote it to, so they went for engine cleaning about 8 years ago. I had a sales person try to impress me with his new machine so, I gave him the worst head known to man (well, a grubby one from the work shop) he spent a hour trying to clean it and failed. The running costs were out of this world.
The best I have ever seen was a laser blaster which did a perfect job but, I would need a sub station to supply the amount of electric needed to run it.
Woodside:
:o :o :o
Nurse Julie:
:o :o :o :o :o ;D ;D ;D ;D ;D
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