Frequently Asked Questions

What is the proper maintenance procedure for cleaning of spray guns? Do I need to soak the fluid tip and air cap after every use? Also, how often should I lubricate the spray gun?

The instruction manual for your spray gun will specify the proper procedure for cleaning your spray gun. You do no need to remove the fluid tip and needle every time you clean. Here are a few simple steps for cleaning your gun.

  1. Remove the air cap and soak it in the proper solvent with the air horns on the top. After 30 minutes or several hours, remove, brush and rinse. 
  2. Flush the gun thoroughly with the solvent.
  3. Clean gun with brush and solvent.
  4. Wipe with a clean cloth and reassemble the spray gun.
My old spec says to use Silica sand, but I see that you do not offer sand anymore.

Your old spec calling for silica sand is outdated. Silica sand should never be used for blasting. Please see our website hereto learn the hazards of blasting with silica sand.

The reason your spec calls for silica sand is because it is virtually free of iron oxide (Fe2O3). All abrasive will leave a small amount of material on the surface after blasting. Iron Oxide is dissimilar to stainless steel and can cause a galvanic corrosion on the surface.   Blast materials that are free of iron oxide include walnut shellglass beadcrushed glass and aluminum oxide.

I have had many customers use fine Green DiamondStarblast and garnet with success to help reduce cost. If you must use an iron-free product and you have a large area to blast, the most common answer is to blast with an inexpensive abrasive first, then sweep blast with aluminum oxide or glass beads as the last abrasive used per spec.

I am bidding a job and they require grade d air for the blast hood. What is that?

Grade D is a classification of breathing air developed in ANSI/Compressed Gas Association (CGA) G-7.1 – 1989. It has been adopted by OSHA in their respiratory standards in 29 CFR, 1910.134. For the technical specifications, please see the OSHA website at this link
Grade D air can be achieved using a 3 stage filter and inline Carbon Monoxide (CO) monitor*.
*There are a few more specifications to achieve Grade D air, but a 3 stage air filter and CO monitor are the main two that makes most air systems compliant. See this pdf for a full list of specifications. 

What are the consumables and regular wear items when blasting and what would be an estimated cost per year?

I have broken down the consumables per each equipment below, however, these prices are based on blasting about 3 days a week and about 4 hours a day. If you are blasting more, then these cost will need to be adjusted.
Consumable Equipment:

  • Nozzles: $840/year
    A nozzle will normally last 100 -150 hours of blasting (half of this time if using aluminum oxide). Assuming you actually only blast 12 hours continuously per week, and the nozzle is taken care of by the operator, one nozzle should last you at least 8 weeks or roughly 6-7 nozzle per year. A nozzle cost around $130-$150 each.
  • Blast Hose: $1,080/year
    A company normally goes through a blast hose every 4-6 months and a blast hose roughly costs around $360 each.
  • Hood Filter Cartridge: $140/year
    A hood filter cartridge needs to be changed at least 3-4 times a year. The filter cartridge costs roughly $35 each.
  • Hood Lens: $650/year
    An operator will go through roughly 5 outer lenses and 1 inner lens per day. Outer lenses are sold in packs of 50 and inner lenses are sold in packs of 10. The outer lens cost about $35 per pack and the inner lens cost about $30 per pack.

Other Equipment Cost:

  • Dust Collector Filter Cartridges: See below
    About once every year or two, you will need to change the filters in the dust collector. Filter cartridges are generally $100-200 each. Make sure that this is multiplied by the number of filters 
  • Misc. Wear and Tear on Equipment $1,000 per year
    I would add about $1,000 per year just for misc. equipment upkeep for blast machine valve repair, replacement, blast hood replacement parts, etc.
What is the average disposal cost for abrasive blast media?

To dispose of abrasives, you need to have a sample tested by your waste disposal company. They will inform you if you can dispose of it as non-hazardous waste or if it is hazardous and needs to be disposed of properly.  If it is non-hazardous waste, a 20 yard container full of spent abrasive costs about $1,200 to be disposed of. If it is determined that the spent abrasive is hazardous, then price changes depending on what hazards it contains.

What CFM air compressor do I need to run a 60:1 airless pump?

A Graco Xtreme 60:1 can use up to 150 CFM of air when operating at maximum pressure around 100 PSI and maximum fluid flow. Real consumption for most materials may be 40%-50% this value. You may reduce the air volume requirement by using a smaller orifice airless spray tip.

I have a standard paint pot with two regulators. I never really learned the right way to set the regulators. What should the gauges show? How do I know if I’m going it right?

Start with both regulators at 0psi. Hold the trigger down on the spray gun over a disposable cup/bucket. Slowly increase the pressure on the paint regulator (the one with the down port supplying air to the pressure pot). Stop increasing once you have a stream leaving the spray gun that travels straight for approximately 2-3 inches before arcing down. 
 
For the air regulator (has your red air hose connected), add air pressure until you have full atomization. Too much atomization pressure leads to excessive overspray and orange peel finish. Check out this video tutorial!

We have a LS-55E, and we would like to replace the drum inside. Is it possible?

Yes, the drum (stilpan) is replaceable. The lead time is two weeks from date of the order. These are items that are not stock and must be fabricated.
The part number for the LS-55E’s stilpan is A100440. Please contact us and we can provide pricing information.

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