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I have some rusty bits that need sand blasting. It looks like a lot of equipment to get - air compressor, cabinet, etc. But I've seen that you can get sand blasting attachments for power washers for not much money. Does anyone have any experience of such things?
 
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I 've just bought a small blast cabinet for just this sort of thing. I already have a compressor so my costs were just down to the cabinet and blast media which came to about £300 total.
I've used the attachment for a pressure washer as well. It is only any use for cleaning large heavy objects that wont get blown around by the water jet. Very messy too. To give you some idea I think the ideal use would be on boat hulls.
A cabinet is expensive but I am finding more uses for it than I imagined I would. Things like cleaning up bolts that have to be re used, they look like new. For detailing parts for engines it is amazing. Take a look at this picture, it's the clutch and brake pedals off an MGB I'm restoring, before and after.

 

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How rusty? Is it flakey, i.e. can you chip it off? If it is heavy rust, try a welders de-slagging pointed hammer, using eye protection. You need a very powerful grit blasting machine to remove heavy rust deposits. For the lighter rusted areas, wire brushes, rotary, hand held and so on?:):
 

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Used a professional grit-blasting cabinet for cleaning snap gauge frames, when I worked for British Indicators, prior to them being spray painted and then oven baked. This was more to abrade the metal surface to provide a key for the hammered finish.:):
 
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How rusty? Is it flakey, i.e. can you chip it off? If it is heavy rust, try a welders de-slagging pointed hammer, using eye protection. You need a very powerful grit blasting machine to remove heavy rust deposits. For the lighter rusted areas, wire brushes, rotary, hand held and so on?:):
Thats dead right, blasting in small cabinets won't remove thick flaky rust, you have to put in a bit of effort first.
ZF, here's the engine bay before I started, plenty of work for the blaster here on all the bits an bobs. Nothing would do it as good.



 
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Used a professional grit-blasting cabinet for cleaning snap gauge frames, when I worked for British Indicators, prior to them being spray painted and then oven baked. This was more to abrade the metal surface to provide a key for the hammered finish.:):
I sometimes miss working in the kinds of places I
used to over summers etc. Had access to all sorts
of cool stuff like CNC lathes & milling machines as well
as sand blasting cabinets etc.

Good for those tricky little tasks that would
otherwise mean buying a new part. :thumbs:
 

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use a chemical bath ;)
 

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Just had some of my old sprint parts presure washed ... and I don't mean with those 160bar home garage jet washers...

with 3000bar heavy industrial presure washer, rust and paint were all gone in an instant... and no worries about sand being stuck everywhere :D
 

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Discussion Starter #12
How rusty? Is it flakey, i.e. can you chip it off? If it is heavy rust, try a welders de-slagging pointed hammer, using eye protection. You need a very powerful grit blasting machine to remove heavy rust deposits. For the lighter rusted areas, wire brushes, rotary, hand held and so on?:):
It varies in degree of badness - anything really flakey I'd probably replace anyway. It's mostly surface rust and just needs a little prep before getting a coat of Hamerite so wire brushing would probably work. It would be nice to clean up the brake calipers though, they do look a bit ropey.
 
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............. a complete Jaguar IRS ...............
Aha I've been there and done that!I see now why you were asking about the blast attachment for the pressure washer,it is a pretty big object! On mine I stripped everything out and wire bushed everything. I was fitting all new stuff back in though so it was only the cage,diff and driveshafts that had to be painted up. I replaced the calipers,discs,shocks and springs.:)
 

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Aha I've been there and done that!I see now why you were asking about the blast attachment for the pressure washer,it is a pretty big object! On mine I stripped everything out and wire bushed everything. I was fitting all new stuff back in though so it was only the cage,diff and driveshafts that had to be painted up. I replaced the calipers,discs,shocks and springs.:)
I only really needed to replace the rear discs but the job has got a bit out of control now. I decided to convert the hubs to XJ40 outboard discs and then also upgrade the brakes to the larger, X300 vented type. So now I have the rusty bits from two other donor cars and I've yet to even start stripping my axle down.
 
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I know the '92 facelift cars had outboard discs, is it a fairly straightforward swap then? Sounds interesting.
 

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The outboard discs, from the XJ40, didn't arrive until part way through 1993 so early facelift cars, like mine, still have the inboard units. It has been popular to put X300/XK8 hubs on to racing XJSs - you just need to shim the space where the disc went and allow for the outer fulcrum pin changing to a metric size. But on the track you don't need to care about the handbrake which is a bit more of a challenge come MOT time.

Instead of trying to fabricate a handbrake system I was able to get a complete axle from a late 1993 XJS which has all the bits I need. Since the calipers and discs that came with it were completely shot I went for the X300 brake upgrade as well.

I'm just praying that it will all fit together and that the ABS will remain functioning.
 

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I thought about a sand blasting cabinet for a while,I have a lot of alloy wheels that need restoring but was quoted at £70 per wheel by a company.

I might splash out and buy one.
 

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I thought about a sand blasting cabinet for a while,I have a lot of alloy wheels that need restoring but was quoted at £70 per wheel by a company.

I might splash out and buy one.
I dont do wheels myself anymore, takes an age to get it all off, mind you that was with a 50yo compressor at the time. The new one is a touch more powerful :)
 

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Alfajack,what sort of blast media do you use for alloy wheels and other aluminium products?
I had a really basic grit blasting gun working off my compressor a couple of years ago in which I used builders sharp sand which was great for the heavy steel hub units and the like but when I tried an old alloy rocker cover it just came up a really dull grey,do different types of media give a different finish?
 
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