View Full Version : Shellac in a spray gun
Castaway
19th October 2010, 07:33 PM
Has anyone had any experience or does anyone think that a touch up spray gun will work with shellac and vice versa, taking for granted that the shellac is properly put through a strainer to weed out any undisolved shellac to prevent clogs.
Cheers
Peter
Dave50
19th October 2010, 07:37 PM
HMMmm! atomised metho around a sparky compressor in a shed full of electrical equipment, yep that's a good idea! can I watch!................. at a distance of course!!!
Castaway
19th October 2010, 07:41 PM
HMMmm! atomised metho around a sparky compressor in a shed full of electrical equipment, yep that's a good idea! can I watch!................. at a distance of course!!!
NO you cant watch, was planning on keeping the compressor insinde and spraying outside as I usually do. So any real advice.
Sapling
19th October 2010, 08:09 PM
I asked the same question a long time ago here as I wanted to refinish seven silky oak chairs with shellac and thought spraying maybe the way to go (HVLP spray unit). Major draw back with what I wanted to do was overspray and of course as already pointed out atomized metho. In the end I applied by brush for the first couple of coats rubbed back and then used a rubber ? (cotton cloth with cotton wool inside) to apply the shellac. Am really happy with the result and have to say it was very therapeutic.
Maybe it's a case of what are you finishing??
watson
19th October 2010, 08:15 PM
OK.. ADMIN intervention here.
The OP (castaway) asked a "method" question.
We don't know his shed setup........so lets just look at the method.
I.E...can you spray shellac.
Castaway
19th October 2010, 08:35 PM
I asked the same question a long time ago here as I wanted to refinish seven silky oak chairs with shellac and thought spraying maybe the way to go (HVLP spray unit). Major draw back with what I wanted to do was overspray and of course as already pointed out atomized metho. In the end I applied by brush for the first couple of coats rubbed back and then used a rubber ? (cotton cloth with cotton wool inside) to apply the shellac. Am really happy with the result and have to say it was very therapeutic.
Maybe it's a case of what are you finishing??
Have used the same method on previous projects as well to great success. I have a new project that I thought would be better suited to spraying it on. Having problems with the shellac drying too fast as I'm having to go around cut outs and curves. I might try to brush it on again. But I'm going to give the spray gun a go and see what the results are. What other advice did you get when you first ask this question.
Cheers
Peter
Sapling
19th October 2010, 08:53 PM
From memory that was about it. The over spray was the point that put me off as the chairs are quite fine and as there were so many angles that I would have had to point the spray gun, over spray would have also affected other parts of the chairs! And i'm no spray painter.
I'll do a search for the thread.
Wood en I
19th October 2010, 08:56 PM
Has anyone had any experience or does anyone think that a touch up spray gun will work with shellac and vice versa, taking for granted that the shellac is properly put through a strainer to weed out any undisolved shellac to prevent clogs.
Cheers
Peter
Intresting question - I for one could see no reason that it could not be done, though one would need to get the viscosity and air presure right.
I think that you would need to use more metho than a normal mix as the most will evaporate from spraying before the shellac hits the surface.
I would be intrested to hear the results.if some one has tried it.
Cheers Warren.
watson
19th October 2010, 08:57 PM
:whs:
Watch this get "flamed" :hahaha:
Anybody heard of airbrushes????
Sapling
19th October 2010, 09:03 PM
No wonder I didn't remember much about it, was three years ago.
http://www.woodworkforums.com/f9/nozzle-size-spraying-shellac-49015/
Castaway
19th October 2010, 09:20 PM
Intresting question - I for one could see no reason that it could not be done, though one would need to get the viscosity and air presure right.
I think that you would need to use more metho than a normal mix as the most will evaporate from spraying before the shellac hits the surface.
I would be intrested to hear the results.if some one has tried it.
Cheers Warren.
Hey Warren hows it going. Any new radios lately. Had a look at that phillips again and still could not get a model number. Yeah this project is a small Airzone Cub and was having trouble with the shellac in places. Well I just bought a spray gun online tonight so I will experiment and let you know.
Castaway
19th October 2010, 09:26 PM
No wonder I didn't remember much about it, was three years ago.
http://www.woodworkforums.com/f9/nozzle-size-spraying-shellac-49015/
Just had a look... interesting. Now I would of thought that you needed to decrease the amount of metho to make the mix a bit thicker to prevent evoporation.
Wood en I
19th October 2010, 10:18 PM
Just had a look... interesting. Now I would of thought that you needed to decrease the amount of metho to make the mix a bit thicker to prevent evoporation.
Hi Peter. I think that if you used a thicker shellac you will require a higher air pressure and the metho loss from spraying could leave a thick coat that may not dry so easy.
I would use low pressure around 25 psi perhaps even lower to keep the evaporation down.and add a little extra metho as you do not want the spray to be dusty, but I am only guessing and perhaps your idea is correct,
Wood en I
19th October 2010, 10:42 PM
Hey Warren hows it going. Any new radios lately. Had a look at that phillips again and still could not get a model number. Yeah this project is a small Airzone Cub and was having trouble with the shellac in places. Well I just bought a spray gun online tonight so I will experiment and let you know.
As soon as I read your post I guessed that it may be a timber radio cabinet with lots of little areas hard to get at,
Peter on your philips radio you would have had a sticker with all the radio details on the rear panel I would guess that it has fallen off years ago.
And yes I have purchased another radio a HMV chassis with a smashed Plastic case but I only want it for parts to restore some other HMV radios that I have, also purchased another valve tester - a ( Paton VCT ) I hope to restore this one to working order,
Cheers
Castaway
20th October 2010, 09:07 PM
As soon as I read your post I guessed that it may be a timber radio cabinet with lots of little areas hard to get at,
Peter on your philips radio you would have had a sticker with all the radio details on the rear panel I would guess that it has fallen off years ago.
And yes I have purchased another radio a HMV chassis with a smashed Plastic case but I only want it for parts to restore some other HMV radios that I have, also purchased another valve tester - a ( Paton VCT ) I hope to restore this one to working order,
Cheers
Yeah the back is missing of it so no sticker. Was hoping there was another on the chassis but no luck. Check your PM sent you a link to some radio stuff.
fletty
20th October 2010, 09:19 PM
I.E...can you spray shellac.
I'm a newby when it comes to spray painting and I'm still learning. The situation is almost desperate enough for me to read the instructions BUT I look at it this way. When I can find them, I buy Zinsser spray cans of shellac. If you can buy spray cans you must be able to spray it yourself? I know there must be complications re nozzle size vs thinning agent vs HVLP etc but it must be possible. The other alternative is to buy Zinsser spray cans?
I got my last one at Anagotes but I don't think they carry it anymore...
fletty
wheelinround
20th October 2010, 09:33 PM
Fletty any time you want to borrow the spray gun let me know.
http://www.woodworkforums.com/f9/nozzle-size-spraying-shellac-49015/
A Perfect Finish (http://www.io.com/~richardr/writing/APerfectFinish/)
Castaway
20th October 2010, 09:39 PM
I'm a newby when it comes to spray painting and I'm still learning. The situation is almost desperate enough for me to read the instructions BUT I look at it this way. When I can find them, I buy Zinsser spray cans of shellac. If you can buy spray cans you must be able to spray it yourself? I know there must be complications re nozzle size vs thinning agent vs HVLP etc but it must be possible. The other alternative is to buy Zinsser spray cans?
I got my last one at Anagotes but I don't think they carry it anymore...
fletty
Fletty, I should have my spray gun next week. Will be posting results of it, hopefully with some good news.
Peter
Wood en I
21st October 2010, 12:47 AM
I'm a newby when it comes to spray painting and I'm still learning. The situation is almost desperate enough for me to read the instructions BUT I look at it this way. When I can find them, I buy Zinsser spray cans of shellac. If you can buy spray cans you must be able to spray it yourself? I know there must be complications re nozzle size vs thinning agent vs HVLP etc but it must be possible. The other alternative is to buy Zinsser spray cans?
I got my last one at Anagotes but I don't think they carry it anymore...
fletty
I have never seen or heard of Zinsser shellac spray cans. I wonder what they use with the shellac I doubt that it would be Metho only
Elill
22nd October 2010, 10:45 PM
A little off topic/only partially related - Hard Shellac sprays nicely when thinned, so I am told
Castaway
22nd October 2010, 11:36 PM
A little off topic/only partially related - Hard Shellac sprays nicely when thinned, so I am told
Excellent news...
Mike Busby
23rd October 2010, 11:37 AM
http://www.zinsser.com.au/downloads/tech_data/Shellac_Info.pdf Product Info sheet.
Rust-Oleum / Zinsser Asia Pacific | History (http://www.rustoleum.com.au/history.asp) Zinsser Australia website which might be of help when finding a supplier.