Brodhead Pietenpol Association

Original Posted By: Michael Perez

Original Posted By: airlion
I can't find them downstairs, but I have a couple books by Ron Fournier on sheetmetal forming. I really seem to recall a section devoted to making louversby hand with simple hammer forming techniques.They're usually on the shelves of the normal big book stores (Barnes and Nobles,etc) in the automotive section. Might be worth browsing through them.ToolsRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Tue, 3 Apr 2012 08:11:57 -0700 (PDT)

Original Posted By: "H. Marvin Haught"
Subject: Pietenpol-List: louvers for cowling areaI found a local hotrod machine shop that had a set of louver dies of various sizes (long since have gone out of bidness)that they tried on my 2024T3 .025" cowling material and it didn't work well. The edges of the cuts were tearing atthe corners so I gave them a test sheet of dead soft aluminum .025" (same mat'l as my engine cooling eyebrows arefabricated from to resist cracking from vibration.) and that worked great but I had to fasten the cut louver plates tomy 2024T3 cowling and accomplished that as the sketches indicate.Mike C.________________________________________________________________________________Subject: Re: Pietenpol-List: Re: fuel tanks, flanging dies, etc.

Original Posted By: "DaveG601XL"
How big do you need them and in what configuration (curved surface, etc)? Youcan buy flat sheets of louvers in different sizes from the aircraft supply houses,and they work fine to do a cut out and then rivet the panel in place. Evenwork well on curved surfaces as long as the surface is not a compound curve(curved more than one direction). I have made press forms of different sizes using MDF and successfully pressed theminto panels. They are not easy to do. And you can flow form them with arivet gun and a tool from Tin Man Technologies. M. Haught On Apr 3, 2012, at 10:02 AM, tools wrote:> > I can't find them downstairs, but I have a couple books by Ron Fournier on sheetmetal forming. I really seem to recall a section devoted to making louversby hand with simple hammer forming techniques.> > They're usually on the shelves of the normal big book stores (Barnes and Nobles,etc) in the automotive section. Might be worth browsing through them.> > Tools> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 940#369940> > > > > > > > > > ________________________________________________________________________________Subject: Pietenpol-List: Re: louvers for cowling area