any supplier of blast media in Glasgow area?

[brightspark]

heres the suction gun i made with air jet and blast nozzle shown

 

[brightspark]

So what am I doing wrong here? Here's two videos
6mm: https://streamable.com/irrt0l
4mm: https://streamable.com/5ov6ya

4mm highly restrictive to media flow

nothing wrong it IS a suction gun nowhere near as powerfull as a pressure fed pot like this

 

[Erie Fred]

But why is the 4mm so restrictive? 4mm is bigger than what is recommended for the CFM I have

What chart are you consulting ?

 

[Erie Fred]

View attachment 406438

Let's qualify some things:
1. You are running a suction gun or a pressure pot ?

2. This chart looks like the common one for a pressure pot.
Is it ? A suction one would have the air nozzle listed as well.

 

[foy9999]

So what am I doing wrong here? Here's two videos
6mm: https://streamable.com/irrt0l
4mm: https://streamable.com/5ov6ya

4mm highly restrictive to media flow

Looks like decent progress in both the clips. I'd be more than happy with that

 

[foy9999]

Well I got a new bag of media, from Ebay. it was only £12 for the bag but another £12.50 for postage. If I could get stuff local would be able to get 2 bags for that price

There was a bit of palaver with the address as the seller said Parcelforce didn't recognise the (rural) address where my workshop is. That delayed it from Friday to Monday dispatch. I told him just to send it anyway. Got an email saying it would be there at such-and-such a time so made sure I was there (had to cancel work for the day).

Soon after the allotted time I saw a Parcelforce truck at the gates of the drive and he turned round, as if to leave, so I sprinted over and waved to the driver but he wasn't actually leaving. Just wasn't coming down the drive, which is about 100 yards long.

Anyway I asked him (as I do all delivery drivers down there) if they use what3words. It's a refence thing where every 3m square piece of land on earth has a name. As usual they don't use it. What is the point of some brainbox inventing something like that and adverts being on TV about it if no-one uses it? It's ideal for farms and stuff on roads with no name.

He said that use OSG. I hadn't heard of this and Googled it when I got home. Bit different from what3words. Basically every 'building' in Scotland has a UPRN which is a number code for everything from bus-stops to farms to sub-stations and you can find it using their website. I asked him if you should add it to the address on label and he said no, put it in box for 'safe place' or whatever. Seems a bit inefficient to me.

So back to the media...

It's definitely Olivine but looks quite like J-Blast as it's black. It doesn't have a mesh-size printed on the bag but gives the size-range of the particles. How does this translate to mesh-size?

I'll report back on how I get on with it but am still curious what this other stuff I got in a yellow bag was. It was pale coloured and apparently left a protective film on the parts after blasting. It wasn't soda before anyone offers that.

£12 for delivery of heavy parcel

25kg of Scangrit/Olivine/magnesium-iron silicate

data

was just right amount to fill my 5 gallon pot

https://imgur.com/EwGoAJs

clip (may or may not work)

 

[Erie Fred]

I've never heard of that composition, but it looks allot like "Black Beauty" a brand name of coal ash (bottom ash not fly ash).
Popular over here....with some people, just not me.

 

[brightspark]

I've never heard of that composition, but it looks allot like "Black Beauty" a brand name of coal ash (bottom ash not fly ash).
Popular over here....with some people, just not me.

its copper slag expendable . you can only use it twice otherwise your just hurtling dust and cloggs easily. sieve on the second go as well

 

[Dcal]

It's definitely Olivine but looks quite like J-Blast as it's black. It doesn't have a mesh-size printed on the bag but gives the size-range of the particles. How does this translate to mesh-size?

I'd say that's standard Scangrit (copper slag) as @brightspark said.
The grading size is as the TDS for standard scangrit.

Olivine is much lighter with a green tinge and grading should be 0.125 - 0.5 for fine olivine.

 

[brightspark]

ive got some for my larger pot its 1mm to 1.5 mm ideal for oil rigs and bridges but a bit coarse for general use it bloody hurts if you drop the blast hose and it blows up the back of your overalls and peppers your legs makes you sprint a bit

 

[foy9999]

That explains it....

I've followed a link incorrectly. Found 'Scangrit Olivine' and assumed Scangrit was their name for Olivine but it's, obviously, the company name for several types of grit.

I see the copper slag listing now

So where can I get the Olivine?

Scangrit products

 

[foy9999]

Well that's me finished with the blaster for now. It's packed away, place clean again after 2 days of sweeping and the item is painted.

I got on quite well with less blockages and sufficient air-power but I flt this grit was starting to go 'blunt' after only 2nd (or 3rd?) time around. On top of that the visor was opaque and I couldn't see what I was doing. I hadn't got every speck of rust off the worst areas but you have to draw a line somewhere and I decided to get some paint on the **** thing.

I will be using the blaster again, to clean some much lighter corrosion for the engine-bay of my Jag. So... I'll need more media and a new visor-pane.

The one in this hood is 225 x 177 x 1.4mm apparently and you can get them in Germany for 4.64 Euros but was hoping somewhere in UK would sell them. It's also curved so if I put flat glass or perspex in it won't fit right

new screen required for this type of hood

didn't get all the rust off

but the paint is on

and can focus on the wood now

 

[chrisg3103]

I didn't even attempt to use that hood thing, got one of these https://www.amazon.co.uk/dp/B0B65HT6SK?ref_=cm_sw_r_apan_dp_1YFS305987ZJE6197NWR_1
Copy of a 3m 6800, cheap, can buy replacement lens covers

https://www.amazon.co.uk/dp/B09J7PZYCG?ref_=cm_sw_r_apan_dp_P33WDKVK1DXPMTVD1PCE

and replacement prefilters pretty cheap too. Combined with a tyvek type suit it keeps most of the nasty out.
Is some look though

Doing a lot of close up blasting under the car the lens covers are pumped in no time

 

[dave h 2]

Well that's me finished with the blaster for now. It's packed away, place clean again after 2 days of sweeping and the item is painted.

I got on quite well with less blockages and sufficient air-power but I flt this grit was starting to go 'blunt' after only 2nd (or 3rd?) time around. On top of that the visor was opaque and I couldn't see what I was doing. I hadn't got every speck of rust off the worst areas but you have to draw a line somewhere and I decided to get some paint on the **** thing.

I will be using the blaster again, to clean some much lighter corrosion for the engine-bay of my Jag. So... I'll need more media and a new visor-pane.

The one in this hood is 225 x 177 x 1.4mm apparently and you can get them in Germany for 4.64 Euros but was hoping somewhere in UK would sell them. It's also curved so if I put flat glass or perspex in it won't fit right

new screen required for this type of hood

didn't get all the rust off

but the paint is on

and can focus on the wood now

You can buy the stuff they use for the windows in boxed toys off a 1M wide roll at wholesale plastics stockists. 2M would last a lifetime of hood windows.

Aluminium oxide lasts well, buy 80grit, it wears down to 40 ( but the grit always breaks to new sharp edges) then you top up with fresh 80 and you get a nice mixed grit heavy enough to knock off big flakes of rust while the fine gets into the small pits.

 

[brightspark]

those hoods are garbage is it air fed if not i bet your gasping for air as for the screen you can get thinish cellular clear sheet cut to size and just stick it over the visor with duct tape and rip it off when its done

 

[Erie Fred]

Well that's me finished with the blaster for now. It's packed away, place clean again after 2 days of sweeping and the item is painted.

I got on quite well with less blockages and sufficient air-power but I flt this grit was starting to go 'blunt' after only 2nd (or 3rd?) time around. On top of that the visor was opaque and I couldn't see what I was doing. I hadn't got every speck of rust off the worst areas but you have to draw a line somewhere and I decided to get some paint on the **** thing.

I will be using the blaster again, to clean some much lighter corrosion for the engine-bay of my Jag. So... I'll need more media and a new visor-pane.

The one in this hood is 225 x 177 x 1.4mm apparently and you can get them in Germany for 4.64 Euros but was hoping somewhere in UK would sell them. It's also curved so if I put flat glass or perspex in it won't fit right

new screen required for this type of hood

didn't get all the rust off

but the paint is on

and can focus on the wood now

It looks like your abrasive was too coarse, and could not get down into the "nooks & crannies".
As far as the hood goes, try a supplied air version, I have very similar to yours with a belt mounted air cooler
to blow cooled air into the hood.
Not a full blown expensive helmet, just a simple hood like you have pictured, makes a world of difference.

 

[foy9999]

It looks like your abrasive was too coarse, and could not get down into the "nooks & crannies".
As far as the hood goes, try a supplied air version, I have very similar to yours with a belt mounted air cooler
to blow cooled air into the hood.
Not a full blown expensive helmet, just a simple hood like you have pictured, makes a world of difference.

I'm not buying any air-fed mask for blasting. I just want a new bit perspex ffs.

I have an air-fed mask for spraying 2K paint and it's an absolute hassle - running out of air all the time.

I found the cheap hood ideal for what I was doing but didn't protect the screen and simply need a new one, not another new venture - like an air-fed blasting hood.

I'm not starting a sand-blasting business

 

[daedalusminos]

I've got the same mask.... it's adequate for occasional home use. I haven't looked for replacement lenses, but it would take much to hack them out of some sheet perspex and hold them over a gentle heat to set the curve

 

[brightspark]

I've got the same mask.... it's adequate for occasional home use. I haven't looked for replacement lenses, but it would take much to hack them out of some sheet perspex and hold them over a gentle heat to set the curve

wot thickness and size are they

 

[dave h 2]

This is what my cheap hood came with ebay link , cuts with scissors'