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#21
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Refinishing questions
On Jan 10, 9:15*am, Gliderphud wrote:
On Jan 10, 7:32 am, JJ Sinclair wrote: Just bought 2 gal of PPG Concept AU (over 3 gal when mixed) *Toyota Super White 90288 and 2 gal of PCL Polyprimer (white)...........................$1032.00 The control surfaces on the DG-300 I'm rebuilding have been stripped, filled, sanded with 80g followed be 220 dry and look good to go for painting. I use a 4 power magnifying glass with a drop lite to spot anything I missed (old eyes). The 80 grit scratches will disappear on the second coat and will insure a good "tooth" is given to the paint which is important anywhere you will be taping (wing roots). One thing that hasen't been mentioned is a good water trap. All compressors produce water and it must be trapped or your paint job will be pock-marked with thousands of little craters caused when water droplets form on the spray nozzle. I use a toilet-paper water trap and it does the job, just replace the roll before each new job...........................you can even dry out the old filter and use it for its origional purpose! Cheep-o, JJ JJ, What do you use to build up after removing the old gelcoat? Why AU versus PU? The PCL Polyprimer 907 white (PE) goes on smooth and contours easily with 80 grit on a 18" rubber board. I spray on 1 coat over everything and 2 coats over any repairs or known low areas after Gold Bond (new Bondo type heavy filler) on and around the repair of the tail feathers and flaps and ailerons. For the stripped fuselage and wings, I shoot on 2 heavy coats and contour 45 left, then 45 right........Hopefully without the need to re-prime any low areas. You can touch the glass, but musn't keep sanding these areas or old Mr. pin-hole will rear his ugly head. Best to stop, mark the low areas and shoot on another primer coat. Before I start sanding the primer, I use body putty on all the defects that show easily. Level the wing before starting to contour, don't just use 2 saw horses..........you need a third one about the inboard end of the aileron. AU is the latest and greatest, not as soft as PU, but still softer (more pliable) than gel-coat. I shoot about 4 coats or until I see good orange-peal everywhere, the 4th coat may be a "leveling" coat with a tad more thinner and the pressure dropped, fan open and gun held 12" from the surface to "fog" on a leveling coat which will also pick up a lot of the overspray. Wet sand it with 600W after 12 hours while its quite easy, followed by 800W, then let it cure for 3 days before buffing-out. I fog on a very thin lacquer coat that sits in the orange-peal..................then 3M guide coat for the 800W. |
#22
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Refinishing questions
On Jan 10, 8:54*am, "01-- Zero One" wrote:
How about some details about the toilet paper dryer, JJ. Cheap-o, II. Larry "JJ Sinclair" wrote in message : Just bought 2 gal of PPG Concept AU (over 3 gal when mixed) *Toyota Super White 90288 and 2 gal of PCL Polyprimer (white)...........................$1032.00 The control surfaces on the DG-300 I'm rebuilding have been stripped, filled, sanded with 80g followed be 220 dry and look good to go for painting. I use a 4 power magnifying glass with a drop lite to spot anything I missed (old eyes). The 80 grit scratches will disappear on the second coat and will insure a good "tooth" is given to the paint which is important anywhere you will be taping (wing roots). One thing that hasen't been mentioned is a good water trap. All compressors produce water and it must be trapped or your paint job will be pock-marked with thousands of little craters caused when water droplets form on the spray nozzle. I use a toilet-paper water trap and it does the job, just replace the roll before each new job...........................you can even dry out the old filter and use it for its origional purpose! Cheep-o, JJ- Hide quoted text - - Show quoted text - I believe this is the filter http://weilerwelding.com/shopsite_sc...otorguard.html MOTORGUARD AIR FILTER, M-60 MOTM-60 MOTORGUARD AIR FILTER/DRYER M-60 - Eliminates moisture from air supply line. Submicronic compressed air filter. Straight -through piping design. 1/2in NPT pipe size. 5in x 7in. Uses M-723 filter elements. I think the fiter element can be replaced with single ply toilet paper. Price has cheaped or creeped to $75.99. How old are you JJ? Richard www.craggyaero.com |
#23
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Refinishing questions
On Jan 11, 6:10*am, Richard wrote:
On Jan 10, 8:54*am, "01-- Zero One" wrote: How about some details about the toilet paper dryer, JJ. Cheap-o, II. Larry "JJ Sinclair" wrote in message : Just bought 2 gal of PPG Concept AU (over 3 gal when mixed) *Toyota Super White 90288 and 2 gal of PCL Polyprimer (white)...........................$1032.00 The control surfaces on the DG-300 I'm rebuilding have been stripped, filled, sanded with 80g followed be 220 dry and look good to go for painting. I use a 4 power magnifying glass with a drop lite to spot anything I missed (old eyes). The 80 grit scratches will disappear on the second coat and will insure a good "tooth" is given to the paint which is important anywhere you will be taping (wing roots). One thing that hasen't been mentioned is a good water trap. All compressors produce water and it must be trapped or your paint job will be pock-marked with thousands of little craters caused when water droplets form on the spray nozzle. I use a toilet-paper water trap and it does the job, just replace the roll before each new job...........................you can even dry out the old filter and use it for its origional purpose! Cheep-o, JJ- Hide quoted text - - Show quoted text - I believe this is the filter http://weilerwelding.com/shopsite_sc...otorguard.html MOTORGUARD AIR FILTER, M-60 MOTM-60 MOTORGUARD AIR FILTER/DRYER M-60 - Eliminates moisture from air supply line. Submicronic compressed air filter. Straight -through piping design. 1/2in NPT pipe size. 5in x 7in. Uses M-723 filter elements. I think the fiter element can be replaced with single ply toilet paper. Price has cheaped or creeped to $75.99. *How old are you JJ? Richardwww.craggyaero.com- Hide quoted text - - Show quoted text - Yep, that's it....................When I was born, they hadn't invented toilet paper, yet! I'm 3 days older than dirt. JJ |
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