Setting up Ebay Sand Blasting nozzles

[@repoman6034]

Great video - best explanation of basics I have seen - Thanks!

[@simonwhite326]

Absolutely brilliant mate. This explains exactly what mine has been doing with the back pressure to the media. Keep up the good work.

[@ArmouryEnterprises]

Awesome Simon, Thanks for watching!

[@scott196464]

have@@ArmouryEnterprises have you put a vacuum gauge on the suction side to set nozzle and jet size ?

[@ArmouryEnterprises]

Hi Joe, I have a gauge ready to do some testing, but I have not yet had the time. I got it more to improve the brass style guns I make.

[@stevebastien4787]

Made alot of sense, haven't had good luck with mine, but now I have some direction, thanks for the vid

[@ArmouryEnterprises]

Hi Steve. Thanks for watching. I hope you managed to get it sorted! Cheers

[@MinibikeMadness]

you can hook a vacuum gauge to your media inlet barb to help adjust the air jet spacing for max vacuum.

[@ArmouryEnterprises]

Hey Matt, Good call, I finally got around to ordering one. I have another project that will need one too so I got one on the way. Thanks for watching!

[@garyyorke1080]

Hey I'm first lol ...Brilliant explanation. Makes a lot of sense , as you say you get what you pay for however the budget does dictate what's available so this is a great reference to possible problems that may show up when you think new gun no issues . Thanks

[@ArmouryEnterprises]

No problem Gary! Thanks for watching!

[@kashubelua]

On point, i guess we were plenty out there desperately looking for simple in deph overwiews and answers, worring about not wasting any precious coins. i started been sicks with showy youtube ego love seekers, you bring instructive informations runs by experimentation and no childs bullshit supposed assertion, i followed your developments, great thanks for your time and investment, sure you ll get rewarded for efforts, respect. Thumb up and sub.

[@ArmouryEnterprises]

Thank you for your message! And thank you for the sub!

[@axisvaporhoningindustries4312]

great explanation and great video

[@ArmouryEnterprises]

Thanks Jeff, Glad you enjoyed it!

[@johngurney1069]

thank you for not replying to my question solved the answers myself now i have a very good gun with lower air required and constant flow of media, with a vacuum of 18 psi sucking media

[@matthowarth8089]

Hi watched your channel long time ago but back now glad your still into vapor blasting 👍 I finally bought a new sand blasting cabinet one question when I put it together would you use sealant or rubber gaskets where I bolt it together to make it water tight ? Many thanks in advance

[@ArmouryEnterprises]

Hi Matt, Welcome back! I just used a silicon sealant to make the joints watertight. A little messy but much less fiddly than using gaskets. Thanks for watching!

[@johngurney1069]

Hi just trying to improve my gun would increasing the length of air jet as the one i have if i move out the vacuum drops if moving in improves but i cannot move jet any further in, also would a longer nozzle also help look forward to your thoughts, regards john

[@badmandayv]

I took my air needle to an engineer to get remade at 2.5mm. He said try a restrictor in the inlet first. He made some sleeves to restrict the inlet, the 2.5mm one works a treat

[@ArmouryEnterprises]

That's a great idea, Was your air needle drilled straight when you bought it?

[@badmandayv]

@@ArmouryEnterprises yeah, must have got lucky

[@badmandayv]

My main problem is water leaking out of the pedal that controls the air. I’ve tried 3 different check valves and they all leak

[@ArmouryEnterprises]

@@badmandayv How bad is the leak from the pedal? Is there media getting in or is it just water? What I am getting at is - is the water definitely coming from inside the cabinet and not just water building up from your compressor.

[@badmandayv]

@@ArmouryEnterprises it’s about a cup full of water on the floor after about 5 mins of blasting. There’s no slurry in it and it seems to be too much to be from the compressor. The leak comes from inside the pedal 🤷‍♂️

[@MrSprocket2u]

Hi , i have a cheap ebay gun ... my problem is surging media from the gun ? it comes and goes its not picking up media at a standard flow ???

[@ArmouryEnterprises]

Hi, What sort of pick up are you using? Is it a straight tube, Tube within a tube, Two tubes side by side, or a metering valve? Metering valves work the best. Many tube pick ups don't allow the media to flow consistently. They will suck up all the media around the inlet tube and then nothing until the sand around the cavity collapses into the void and the cycle repeats.

[@dorianjones9437]

thanks for the videos' manage to build a reasonable lockdown vapour blaster, have been experimenting with pumps, guns etc, will you be offering air jets for the ebay guns as I am currently using a sleeve bodge, all the best.

[@ArmouryEnterprises]

Hi Dorian, Not at this stage. Currently with the time it takes me to make them and then the shipping costs on top of it, the price I am able to do them for is too expensive. What I have been recommending is that people take the steel jet into their local engineering workshop and getting them to copy it using SS or Aluminium and install an o-ring groove. A small handful of people have done so and have had good results and at very good prices. Thanks for watching!

[@dorianjones9437]

@@ArmouryEnterprises thanks for replying.

[@smoke_stackz3168]

Whts the best gap on the nozzle and jet

[@ArmouryEnterprises]

I use between 4 and 6mm. A general rule of thumb is the larger the air jet and ceramic nozzle - the larger the gap. Thanks for watching!

[@frankj86minim]

Great video explaining the traps I should not go into :) I was looking at this gun and considering a 3-4mm Nozzle but that seems like a no-go. Do you have experience of the CFM requirements of the nozzle sizes in this gun when used in a cabinet for dry sandblasting? I have another gun with 6mm nozzle that works fine now with continues operation at 60-70psi with my two stage 10bar compressor with 100L tank. Not sure of the specs but it pulls about 4.5kW from the grid so maybe 5-5.5hp. I do have a lathe so I could make smaller nozzles but I don't have experience drilling that long concentric holes in it.. Was it hard to get it 100% in center in both ends or does it only matter in the exit end?

[@ArmouryEnterprises]

Hi Frank, When it comes to air consumption it's the the air jet that dictates cfm usage. Do you know what size the air jet is in the 6mm gun? When I make these jets, I usually drill from the back side with a larger diameter drill bit. Then I centre the small end before drilling through with the small drill. It should remain relatively centred at least long enough for it to be a steady jet. Cheers! Josh

[@frankj86minim]

@@ArmouryEnterprises I just went out and measured it. It's 3mm air nozzle and 6mm main. This also is the same dimensions as the clemco professional guns use (air nozzle half the size of main nozzle). Thank you for the tip. I'll try that when I make one. How long does the small dimension have to be to avoid turbulence or have other issues?

[@ArmouryEnterprises]

@@frankj86minim Is that ratio for dry blast guns? For a 3mm air jet, the smallest I would go is an 8mm ceramic. I usually make the depth of the air jet bore about 15mm. That seems to be a bit of a sweet spot for jet formation without too much flow restriction.

[@frankj86minim]

@@ArmouryEnterprises yeah this was dry blasting. My workshop is below freezing in the winter so I can't rund a vapour blaster :S

[@ArmouryEnterprises]

@@frankj86minim Hi Frank, I know a number of guys in the US in a similar position. They use tank heaters to heat up the slurry mix. Some even claim they work better with warm water.

[@natfunk71]

What are some sources for the more expensive guns?

[@ArmouryEnterprises]

Tacoma company in the US is probably the most commonly used of the more expensive guns in vapour blasting cabinets. Guyson, Trinco and ecoline are a handful of others. As for sources you probably need to do a google search to find local suppliers. Thanks for watching!

[@pedromachado3519]

Hi! Is better to use 1/2" or 3/4" in oder to make a nozzle ? Thks!

[@ArmouryEnterprises]

Hi I use 20mm, so 3/4" is close.