Return-Path: Sender: "Marvin Kaye" To: lml@lancaironline.net Date: Fri, 15 Oct 2004 13:06:54 -0400 Message-ID: X-Original-Return-Path: Received: from mailout1.accesscomm.ca ([204.83.142.27] verified) by logan.com (CommuniGate Pro SMTP 4.2.5) with ESMTP id 474195 for lml@lancaironline.net; Fri, 15 Oct 2004 10:20:08 -0400 Received-SPF: pass receiver=logan.com; client-ip=204.83.142.27; envelope-from=jjjohnson@accesscomm.ca Received: from Drafting1 (static24-72-101-251.weyburn.accesscomm.ca [24.72.101.251]) by mailout1.accesscomm.ca (Access Communications) with ESMTP id i9FEJbGP002206 for ; Fri, 15 Oct 2004 08:19:37 -0600 X-Original-Message-ID: <002601c4b2c2$01e32740$8200a8c0@Drafting1> From: "Jarrett Johnson" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Making a Mold, PVA X-Original-Date: Fri, 15 Oct 2004 08:19:39 -0600 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0023_01C4B28F.B71B65B0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0023_01C4B28F.B71B65B0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Dan Wrote "The PVA works pretty well but what I don't like about it is the way it = beads up on a waxed surface so when it's a hot day, it's OK to mist coat = the PVA then apply more as it builds up thicker. But what I REALLY = liked was a product called PV6 from Finish Kare. It was like a solvent = based PVA that didn't bead up. It also gave a mirror shine so you = didn't have to do perfectly glossy parts to get a glossy mold. = Unfortunately they went bust so I don't know of a replacement. And PVA = was NEVER used on the inside of a "real" mold since it left a fairly = crappy finish with orange peel. But it certainly would keep the resin = from sticking to Bondo so that is a viable option." Ok, first things first.. [Disclaimer] I've never done this.. but have = talked to a local fellow who does it every day and claims it works = great. His claim is that he polish's PVA after putting it on w/ some = mold release wax. His molds are all a grade A finish inside, and he was = having the same 'Orange Peel' problem with his parts. His solution.. = spray on the PVA let it dry.. and then buff it back to a Grade A shine.. = Claims if your gentle and not to aggressive you can do it every time.. = and have the benefits of PVA w/ the finish of a wax/polished surface.. = It's probably not something you'd want to do continuously for a = production process but... might work great for a couple smaller parts. = He builds Tub Surrounds and Truck Toppers.. 2 Cents Jarrett Johnson ------=_NextPart_000_0023_01C4B28F.B71B65B0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Dan Wrote

"The PVA works pretty well but what I don't like about it is the = way it=20 beads up on a waxed surface so when it's a hot day, it's OK to mist coat = the PVA=20 then apply more as it builds up thicker. But what I REALLY liked = was a=20 product called PV6 from Finish Kare. It was like a solvent based = PVA that=20 didn't bead up. It also gave a mirror shine so you didn't have to = do=20 perfectly glossy parts to get a glossy mold. Unfortunately they = went bust=20 so I don't know of a replacement. And PVA was NEVER used on the = inside of=20 a "real" mold since it left a fairly crappy finish with orange = peel. But=20 it certainly would keep the resin from sticking to Bondo so that is a = viable=20 option."

<snip>

Ok, first things first.. [Disclaimer] = I've never=20 done this.. but have talked to a local fellow who does it every day = and=20 claims it works great. His claim is that he polish's PVA after = putting it=20 on w/ some mold release wax. His molds are all a grade A finish inside, = and he=20 was having the same 'Orange Peel' problem with his parts. His solution.. = spray=20 on the PVA let it dry.. and then buff it back to a Grade A shine.. = Claims if=20 your gentle and not to aggressive you can do it every time.. and have = the=20 benefits of PVA w/ the finish of a wax/polished surface.. It's probably = not=20 something you'd want to do continuously for a production process but... = might=20 work great for a couple smaller parts. He builds Tub Surrounds and Truck = Toppers..

2 Cents

Jarrett Johnson

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