I don't think those tips fit my gun... http://www.supercheapauto.com.au/Product/Blackridge-Air-Sand-Blast-Gun-600mL/214306?menuFrom=1021414 This is the one I have... it can be used for both grit and Soda... although the Industrial Soda has a larger particle size than the food grade... so maybe it doesn't "dust" quite as bad...
theres a used 13 lt ultra sonic on e/bay now for bid $169 located sth Penrith with 3 days to go and even the industial units using the soda designed for blasting smash the soda ( this soda is designed with sharper edgers )
Is the tip in that gun replaceable ? If not, you might be able to adapt it to fit a ceramic spark plug insulator ? Not sure on particle size difference with industrial and food grade soda, my Sodium Bicarbonte is Medical grade Jaycar sell a couple of little Ultrasonic cleaner's, might just fit a carby in the second one 50W, $79- https://www.jaycar.com.au/domestic-ultrasonic-cleaner/p/YH5408 170W with temp control, $169 https://www.jaycar.com.au/170w-ultrasonic-cleaner-with-temperature-control/p/YH5412
by the way any thing you soda blast good idea to clean off not long after ,a mate won a prize of soda blasting at a bike show ( the owner / operator had just bought a commercial unit ) got the cases / barrels for a Harley motor done , was told to leave the residue on as would prevent tarnish , 6 months later remove residue to assemble motor as was left with a bad soda stain , had to finish up painting the whole motor to hide the stain
Well it is removable but not sure if there are replacements... the hole is 6mm and looks like it is hardened so it won't wear too quickly...
I have my eye on that eBay one... 15 litres is a bot bigger than the 2.5 litres for the Supercheap one... lol
with the ultra sonics ,would definitely go for the ones with the 1 hr timer at a min ,as otherwise you would have to stay around restarting them ,mine goes in (and heated as well ) for 1 hour for best results , I think but don't know that the ones with short timers are ment more for dentures , rings etc than getting real gung off
I missed that used one on eBay... set my timer for the wrong time...lol I think they will re-list it as they have been trying to sell it for the same price since the beginning of December. Still $169 if I can get it is a good price for 15 litre capacity.
I reckon that Snap On Soda blasting gun in the video above was running at about 150 psi, it make's a lot of difference compared to running them at 100 psi Most compressor's can be adjusted to run at higher pressure, remove the cover off the switch and turn the pressure adjusting screw in to raise the cut in/out pressure. Try tuning the screw/nut 1 full turn in and run the compressor to check the new cut in/out setting against the gauge. Before raising the cut in/out pressure, check that the pressure relief valve is rated to the higher pressure, if not you may need to get one that's rated to the higher pressure, usually you need one rated to another 15-20 psi more than the cut out pressure. Adjust the top philip's head screw (red arrow) with this style switch The pressure difference screw is to adjust the cut in/out difference, so if you compressor cut's in at 90 psi, and cut's out at 110 psi you can make it cut out at 125 psi by turning the screw out about 1 turn ( some compressor's require less/more turn's) Adjust the gold flat headed screw on the right on this style switch
What's the safe upper pressure limit on a good quality tank in good condition? My twin cylinder should be able to keep the pace better with a higher upper limit
I am running my compressor tank at 150 psi atm, my tank is rated to WP (working pressure) : 1034 Kpa (150psi), and TP: 1551Kpa (224 psi) @ 50° C You shouldn't go higher pressure than the tank is rated to, That said, i have bumped up a couple of my compressor's to cut out at 130/140 psi before and the pressure last's a lot longer, so you get longer use from each tank.
I dont believe that's true. Blasting with sand is illegal in the UK due to the dangers of silicosis. It's quite good at killing you slowly. Safer mediums like glass bead, crushed glass are ok as it's processed. Of course, you can also use oxides if you want to remove a bit more metal but be aware they can warp aluminium. Another point is that its not the pressure that's important but the flow. 100psi is fine but you need a good cfm, so big rservoir and hoses with a large area (none of this 1/4" stuff).