X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 09 Nov 2007 08:48:25 -0500 Message-ID: X-Original-Return-Path: Received: from pfepc.post.tele.dk ([195.41.46.237] verified) by logan.com (CommuniGate Pro SMTP 5.2c1) with ESMTP id 2462969 for lml@lancaironline.net; Fri, 09 Nov 2007 04:37:51 -0500 Received-SPF: none receiver=logan.com; client-ip=195.41.46.237; envelope-from=tj@yacht-pool.dk Received: from yp2 (cpe.atm2-0-55480.0xc2c09616.kd4nxx16.customer.tele.dk [194.192.150.22]) by pfepc.post.tele.dk (Postfix) with SMTP id 4FFC78A0024 for ; Fri, 9 Nov 2007 10:36:53 +0100 (CET) X-Original-Message-ID: <00a401c822b4$12354dc0$640fa8c0@yp2> From: =?iso-8859-1?Q?Tim_J=F8rgensen?= X-Original-To: "Lancair Mailing List" References: <000001c8224c$931adfd0$680aa8c0@RTSLaptop> Subject: Re: Filling and Sanding X-Original-Date: Fri, 9 Nov 2007 10:36:55 +0100 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00A1_01C822BC.7308C610" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 This is a multi-part message in MIME format. ------=_NextPart_000_00A1_01C822BC.7308C610 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Can one do the initial flying (40 Hrs) with just the last sprayfiller = coat ? I wouldn=B4t do so, the sprayfiller seems to be porous on some = microscopic level. I imagine that is why it sands so easily. If this is = the case, and I think so, the oil and exhaust soot that is inevitably = picked up, will migrate into the filler with the possible result that = your paintwork won=B4t adhere properly. I also think it would be a shame to throw your lovely 320 grit tack and = finish overboard. Also, you would most probably pick up a scratch here = and there, the filler is fairly soft, so you=B4d have to resand and = inspect every square inch again before painting. If I had decided to fly my plane in primer, I think I would still pay a = lot of intention to the belly, perhaps skip the sprayfiller and sand the = UV primer to 240 grit, while the airframe was still inverted and then = leave the rest of the airframe at the 100 grit stage. After flight = testing, thorough degreasing and a quick resand, I=B4d continue with the = sprayfiller and wet sanding. As I see it, sprayfilling is really part of = the final paint job, but a part that is well managable by the builder. = It is also the expensive part of the paint job and, most importantly, = your last chance of spotting any imperfections. I don=B4t expect my = painter and his employees to be as devoted to the finish of my aircraft = as I am. After all, they didn=B4t spend tons of money and some 3000 hrs. = building the darn thing. In fact, you should expect the painter to see = you as a complete idiot, who just threw away his lifesavings on some = useless piece of junk, that probably won=B4t ever fly anyway. If you do = so, you=B4ll pay the necessary attention to your prep work! Now, I know my painter better than this, but I will still be around = every single minute he works on my plane. I am gonna just walk around = with a piece of sandpaper letting him think that I am there to help him = free of charge.......... So: I am extremely lazy because I am fat. I build this aircraft because = I am also extremely optimistic. I intend to have my aircraft painted, = wet sanded, buffed and waxed before final assembly. I do not intend to = fly the aircraft at any stage earlier than this. I also plan on having the aircraft painted at an early stage, that is = before i install a lot of wiring, hydraulics and all that. Yep, it=B4s = gutsy, but this way I will only have to build the plane once. I also = won=B4t have my installations covered in half a ton of dust, overspray, = wetsand goo, polishing paste, wax and hydraulic fluid. I have payed = close attention to all gaps, hopefully having left enough room for = paint. All gaps are, unless specified different in the manual, 1/16".=20 If all you guys who flew in primer know this is too tight, now would be = a good time to tell me !!! Before going to the paintshop, I will rig the plane completely, adjust = gear doors, push rods and the lot, just to be absolutely certain that = all gaps are within specs and I didn=B4t leave any "jobs to be done = later"......... Then paint shop, wet sand, buff, wrap fuselage in felt and plastic, = install instruments, radios, wiring, inbd. hydraulic lines and the lot, = wax, wax, install interior, weigh, install battery, weigh, relocate hyd. = pump, weigh, wax, test fly for 50 hrs., announce long vacation, go to = Osh, drink beer, drink beer.......................... Hmmm, I=B4d better stay focused. Back to that pesky canopy frame. = #&%=A4# !=20 Tim Jorgensen 360MKIIOBFB / 65% still ------=_NextPart_000_00A1_01C822BC.7308C610 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Can one do the initial flying (40 = Hrs) with=20 just the last sprayfiller coat ?
 
I wouldn=B4t do so, the sprayfiller = seems to be=20 porous on some microscopic level. I imagine that is why it sands so = easily. If=20 this is the case, and I think so, the oil and exhaust soot that is = inevitably=20 picked up, will migrate into the filler with the possible result that = your=20 paintwork won=B4t adhere properly.
I also think it would be a shame to = throw your=20 lovely 320 grit tack and finish overboard. Also, you would most = probably=20 pick up a scratch here and there, the filler is fairly soft, so you=B4d = have to=20 resand and inspect every square inch again before painting.
If I had decided to fly my plane in = primer, I think=20 I would still pay a lot of intention to the belly, perhaps skip the = sprayfiller=20 and sand the UV primer to 240 grit, while the airframe was still=20 inverted and then leave the rest of the airframe at the 100 = grit=20 stage. After flight testing, thorough degreasing and a quick = resand, I=B4d=20 continue with the sprayfiller and wet sanding. As I see it, = sprayfilling is=20 really part of the final paint job, but a part that is well managable by = the=20 builder. It is also the expensive part of the paint job and, most = importantly,=20 your last chance of spotting any imperfections. I don=B4t expect my = painter=20 and his employees to be as devoted to the finish of my aircraft as = I am.=20 After all, they didn=B4t spend tons of money and some 3000 hrs. building = the darn=20 thing. In fact, you should expect the painter to see you as a=20 complete idiot, who just threw away his lifesavings on some useless = piece=20 of junk, that probably won=B4t ever fly anyway. If you do so, you=B4ll = pay the=20 necessary attention to your prep work!
Now, I know my painter better than = this, but I will=20 still be around every single minute he works on my plane. I am gonna = just walk=20 around with a piece of sandpaper letting him think that I am there to = help him=20 free of charge..........
 
So: I am extremely lazy because I am = fat. I=20 build this aircraft because I am also extremely optimistic. I intend to = have my=20 aircraft painted, wet sanded, buffed and waxed before final assembly. I = do not=20 intend to fly the aircraft at any stage earlier than this.
I also plan on having the aircraft = painted at an=20 early stage, that is before i install a lot of wiring, hydraulics and = all that.=20 Yep, it=B4s gutsy, but this way I will only have to build the plane = once. I also=20 won=B4t have my installations covered in half a ton of dust, overspray, = wetsand=20 goo, polishing paste, wax and hydraulic fluid. I have payed close = attention=20 to all gaps, hopefully having left enough room for paint. All gaps = are,=20 unless specified different in the manual, 1/16".
If all you guys who flew in primer = know this is=20 too tight, now would be a good time to tell me = !!!
 
Before going to the paintshop, I will = rig the plane=20 completely, adjust gear doors, push rods and the lot, just = to be=20 absolutely certain that all gaps are within specs and I didn=B4t leave = any "jobs=20 to be done later".........
Then paint shop, wet sand, buff, wrap = fuselage in=20 felt and plastic, install instruments, radios, wiring, inbd. hydraulic = lines and=20 the lot, wax, wax, install interior, weigh, install battery, weigh, = relocate=20 hyd. pump, weigh, wax, test fly for 50 hrs., announce long vacation, go = to Osh,=20 drink beer, drink beer..........................
 
Hmmm, I=B4d better stay focused. Back = to that pesky=20 canopy frame.  #&%=A4# ! 
 
Tim Jorgensen
360MKIIOBFB / 65% still
 
 
 
 
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