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| Thread ID: 46127 | 2004-06-14 08:56:00 | OT - Spray Painting Advice | Winston001 (3612) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 244356 | 2004-06-14 08:56:00 | This is a great forum. Experts on everything abound. So I wonder if anyone can help. I have an air compressor (as I am sure most Kiwis do) and a high quality (cough) spray painting handpiece with bottle. All courtesy of Mitre 10. This painting business looks an easy lark, I thought to myself, so I tried it. I used acrylic roofing paint, thinned with water by 10-15%. Initially no paint came out at all. More thinning and shaking resulted in a sort of green mist which I had to accept as paint coverage. Very slow and tedious. In fact I picked up a brush later and doubled the speed of coverage. Googled the subject and went to the library. No real explanations of the finer points of using spray paint equipment. Everyone assumes it all works and tells of the wonderful special effects you can achieve. I think I have a 2mm nozzle. I suspect this is too small but that seems odd on a handyman piece of equipment. (yes, you can all jump in here with the appropriate witticisms) Anybody done much of this? Cheers Winston001 |
Winston001 (3612) | ||
| 244357 | 2004-06-14 09:12:00 | The spray gun should have 2 knurled knobs at the back . One of them regulates the amount of air going into the gun & the other regulates the amount of paint that comes out the nozzle. Have a play with those & just use water in the gun so you can have a play without making a mess. Steve |
Steve Askew (119) | ||
| 244358 | 2004-06-14 09:15:00 | Also you want about 40 psi delivered to the spray gun. Steve |
Steve Askew (119) | ||
| 244359 | 2004-06-14 09:26:00 | Thanks Steve . Yes, the knobs are there, and believe me, they were fiddled with until they came off . The handpiece still seemed to get blocked after about 10-15 minutes no matter what setting I used . Your idea of experimenting with water is excellent . I'm just looking for guidance before I attack the nozzle with a 4mm drill . Kind of a one-way modification so I'm hesitating . Air pressure isn't a problem hopefully . 2 . 5 hp compressor with 40litre tank . |
Winston001 (3612) | ||
| 244360 | 2004-06-14 10:07:00 | Its a knack bought about by experience i do believe. My last painting adventure was to disasemble a case and paint it a Holden metallic green,i had much the same problems,messed around with the 2 knobs and air-pressure untill my head hurt,then me younger brother happened to call in and after less then 20 seconds of fiddling had her set up perfectly. I knew he would come in useful one day,surprised that it only took 23 years though. |
metla (154) | ||
| 244361 | 2004-06-14 10:14:00 | > Initially no paint came out at all. More thinning and shaking resulted in a sort of green mist which I had to accept as paint coverage. Very slow and tedious. In fact I picked up a brush later and doubled the speed of coverage. I don't know, and don't want to know, anything about spray painting but I just have to say that you do tell a good story, Winston. Had me in stitches here tonight. :D |
Susan B (19) | ||
| 244362 | 2004-06-14 10:22:00 | Normally you would put roofing paint on with an airless set up,with no thinning of the paint, I'll do my best to educate in the setting up of the gun you have Winston . 1)If there are(should be) two adjusting knobs on the back of the gun,screw them both shut(clockwise) . One is for paint,(the lower of the two),the other for air(the top one)(actually for fan width) . 2)If there is a knob on the bottom of the handle of gun(next to where air hose connects to gun),close this also . 3)Fill up your pot/bottle/cup,what ever you want to refer to it as,with paint,connect this to your airline,compressor going of course . 4) Now if there is a knob,as mentioned in #2, turn this on 3/4 to full . Pulling the trigger at this stage should give you an idea as to whether you have the desired amount . If so go to next stage . 5)Hold your finger on the trigger(without looking directly at where paint comes out)pointing gun towards a clear space,unscrew the top knob about half way out . Go to next stage . 6)While still holding finger on trigger,unscrew the second or lower knob until the desired amount of paint comes out . You are almost set now . 7)If all goes well,you should be able to start painting . 8)Hold gun about 12inches away from the "job" . Adjust paint up or down as required . Same for fan adjustment Hope that gets you started, if not post back with more queries . All the best DD |
dumdum (4965) | ||
| 244363 | 2004-06-14 10:25:00 | Depending on the design of the spray gun, it will need a precise setting to make the paint come out properly. If it's similar to a mini-version i've used (more of an airbrush actually), you need the air to go across the top of the nozzle at the right pressure, angle and height to make any paint come out. Personally I prefer a roller/paintbrush, having painted 2 houses successfully using rollers (for walls, ceiling and roof), and paintbrushes for edges/corners. It also requires less coats, because you don't thin down the paint. |
somebody (208) | ||
| 244364 | 2004-06-14 10:52:00 | Winston001 I feel that this is a severe treatment for the keypad on your phone, I really can't see the paint fixing the problem of too much graphite. Please reconsider. |
godfather (25) | ||
| 244365 | 2004-06-14 10:58:00 | must ask . . . . . What are you painting?????? and if its a repaint of the tardis blue or red iis the preferred colours are they not???? green???? oh i get it camoflage? to go with the photo i have seen??? blending in thing? the mind boggles really, and if you hand painted it any way is that not the way it should have been done??? things will all become clear in time i feel, er green in time or what ever colour you are painting . . . . . :D dont forget to clean the gun as blocked nozzles have a tendency to stuff the sprayer . . . . . . gun / bottle not W001 i mean . . . . :p beetle |
beetle (243) | ||
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