Anyone got one of these?

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richardpope50
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Anyone got one of these?

Post by richardpope50 »

https://www.banggood.com/Pneumatic-Sand ... rehouse=CN

I have a Clarke gun that is very much like a spray gun but it seems to get blocked even though it is a very simple mechanism. So I wondered if this was any good even with a small container. I want to clean up all my odd bits of components for painting on my TR6 restoration.


Richard.
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garrycol
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Re: Anyone got one of these?

Post by garrycol »

I have a very similar one - it certainly blocks up if using sand but may be OK if using proper blasting medium that is perfectly dry - any dampness even from damp air blocks them.

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richardpope50
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Re: Anyone got one of these?

Post by richardpope50 »

I do use blasting medium - Clarke's stuff - so perhaps it will be OK.

The Clarke gun I have is so simple that I do not know why it blocks - medium is always dry. 50% of the time I just get air out and no grit. When I do get grit, it works fine. I've no idea why grit turns on / off as all the air does is suck up the grit from the pot via a large tune. My air compressor is a big 300l twin compressor one at 8bar so that's not the problem.

Just hoping to find one that works even if it is for small jobs.
Richard.
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Ian Anderson
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Re: Anyone got one of these?

Post by Ian Anderson »

Try using Bicarbonate of Soda
It works well or so I am told and once you are done you can just wash the residue away as non toxic

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richardpope50
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Re: Anyone got one of these?

Post by richardpope50 »

Update ....

So I am making one. £3.99 for the gun and tube set is worth a try.

I made my own blasting cabinet and use proper grit and recycle it. Baking soda does make a real mess and is used for outside work. There are several bad reports especially its impact in the garden. I did look at it but stuck with grit as it is mainly for small parts up to stub axle size.

Thanks.
Richard.
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Re: Anyone got one of these?

Post by stevieturbo »

I've a couple of Sealey blasters, small and large. Using their grit. Both are a nightmare.

If you get them to work and keep going they're fine...but when you stop...clog. Bit of a nightmare really.

See a few others advertised for a wet blast using a power washer ? Might suit some outdoor stuff, although ultimately will still leave a mess.

A nice reliable solution for small stuff would be good. Although some of those media tumbler thingies might be useful ?
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Re: Anyone got one of these?

Post by r2d2hp »

Try kiln dried sand as used for block paving. Thats what I use in blasting cabinet. Can get dusty

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richardpope50
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Re: Anyone got one of these?

Post by richardpope50 »

I suspect Sealey blasters are same as my Clarke https://www.machinemart.co.uk/p/sb3-gritblast-gun/.

I use Clarke oxide blasting grit which is very fine stuff and I keep it bone dry.

Will make that bottle gun in a week or two and will post my results.
Richard.
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Re: Anyone got one of these?

Post by Roverc32 »

Seem's a bit mad scientist - but bear with me! The media swirling around in the blasting gun can create a static charge. If you spend enough time blasting within a cabinet you often get static shocks ( i spent 8 years in a tyre factory cleaning moulding components various alloys,steels and aluminium from carbon residues using an ancient blasting cabinet). The items you clean can also create their own static charge and pass the charge backwards to the gun ( which may cause your media clinging problem. Try putting an earthing strap or small chain from your gun to a suitable earth or touch the gun to something metal to release the charge - just a thought and may well work!

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richardpope50
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Re: Anyone got one of these?

Post by richardpope50 »

Interesting thought. My cabinate is home made and wood with curtain sides. Also I use it outside sidtting on top of a workmate so really there is no where to earth things. Guess it is something I'll have to live with.

I've got the parts to make the gun referred to above but it's waiting for the time to come when I need it - soon / autumn.
Richard.
Dax Rush 5.0l TVR V8, EFI with Megasquirt ECU and wasted spark, Racelogic Traction Control, ABS and Quaife LSD

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