---------------------------------------------------------- Pietenpol-List Digest Archive --- Total Messages Posted Fri 04/17/20: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:48 AM - Re: Heating after the bend (PoconoJohn2) 2. 05:04 AM - Re: Re: Heating after the bend (Jack Philips) 3. 07:03 AM - Re: Heating after the bend (PoconoJohn2) ________________________________ Message 1 _____________________________________ Time: 04:48:20 AM PST US Subject: Pietenpol-List: Re: Heating after the bend From: "PoconoJohn2" Hi Oscar! Maybe you've seen this, but certainly others coming by might find this article interesting (posted below). Meanwhile, I did heat some of the bends with a BernzOmatic Map-Pro Hand Torch to see what happens. I let the steel just barely start to turn red. I pulled the torch away slowly as to not shock cool. There's no obvious damage to the steel, which has a slight blue tinge to it and some soot (carbon I suppose) which wipes off. I know some builders heat steel to make it easier to bend. I assume there's no harm done, especially at a temperature where it doesn't turn red and heated for a brief time. Here's the article: http://www.eaa1000.av.org/technicl/4130.htm Read this topic online here: http://forums.matronics.com/viewtopic.php?p=495860#495860 ________________________________ Message 2 _____________________________________ Time: 05:04:04 AM PST US From: "Jack Philips" Subject: RE: Pietenpol-List: Re: Heating after the bend As long as you used the appropriate bend radius and don't see any cracking at the bend, you're fine. If you do see cracking, post-bend heating won't help. Just throw the cracked parts away and start over with a larger bend radius. Jack Phillips NX899JP Smith Mountain Lake, Virginia -----Original Message----- From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of PoconoJohn2 Sent: Thursday, April 16, 2020 8:53 PM Subject: Pietenpol-List: Re: Heating after the bend --> Same here. I never pre-heated anything (except tubing to squish the ends), but for these 90 degree bends, just curious. I'm not worried about the small bends on wire fittings and such. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=495850#495850 ________________________________ Message 3 _____________________________________ Time: 07:03:15 AM PST US Subject: Pietenpol-List: Re: Heating after the bend From: "PoconoJohn2" A pictures worth a thousand words. I was going to use the rod you see in the second photo with a vise, but my floor mounted bender seemed to give a rounder radius (using trial pieces), so went with that. The bend radius looks OK and no damage noted. I beveled the edges also. The details in these photos is amazing. I took them from 150 grit to 220 to 320, and they looked good. Seeing them now, guess I'll hit 'em again. John C Read this topic online here: http://forums.matronics.com/viewtopic.php?p=495862#495862 Attachments: http://forums.matronics.com//files/piet9916_181.jpg http://forums.matronics.com//files/bend_438.jpg ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message pietenpol-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Pietenpol-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/pietenpol-list Browse Digests http://www.matronics.com/digest/pietenpol-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.