I have a small compressor - 1.25 hp, the output is 5cfm, I'd like to use this for spraying glaze but am struggling to decide on a gun.
In an ideal world I'd have a larger compressor but that's not going to happen yet.
I've found spray guns with a 1.8mm nozzle which requires 4.3cfm and another with a 1.5mm nozzle which requires 4.2 - 7.0 cfm and several with smaller nozzles at either 1.0mm or 0.8mm, one in particular of those last two only requires 1.6- 4.0 cfm.
Of the spray guns I've found, some are HVLP and some are LVLP, is one better than the other for glazing, and why?
I'm looking for the larger nozzles (1.5mm & 1.8mm) because all that I've found on the net with regard to spraying glazes says that that's what's needed.
I'm puzzled however as to why I would need that size nozzle. If my glaze has been through a 100mesh sieve with a hole size of 0.152mm why do I need such a large nozzle?
Next question, I've used the spray equipment at college and I know that I don't spray anything for more than a few seconds at a time, does this mean that I can use a gun with greater requirements than the compressor is capable of delivering if the gun was used constantly?
There is no Harbour Freight in the UK, so please don't send me there - but should I just buy the cheapest that seems closest to my requirements and give it a try? It may be quicker in the long run, any detailed info on this is so hard to find.