All MetalShaping

Go Back   All MetalShaping > General Metal Shaping Discussion > Basic questions and answers
  Today's Posts Posts for Last 7 Days Posts for Last 14 Days  

Reply
 
Thread Tools Search this Thread Display Modes
  #11  
Old 01-30-2019, 11:56 AM
crystallographic crystallographic is offline
MetalShaper of the Month October '14 , April '16, July 2020, Jan 2023
 
Join Date: Dec 2010
Location: Western Sierra Nevadas, Badger Hill, CA
Posts: 4,388
Default straightedge, pushing, torch flame

Bernt,
On long flat panels with old damage you have to use a long straightedge for checking the length of the panel as you work it.
Second, using a push to hold the panel is vital. You can use a board to push with, for support along a length - avoids pushing bulges.
Third, check for tight and loose spots with the torch flame. If a spot tightens with heat then stretch it. If the spot loosens, then shrink it. The flame will show you a lot as you pass it over half-foot areas, looking for swelling, sinking, or no change.
(I've done a lot of this work, on both steel and aluminum.)
__________________
Kent

http://www.tinmantech.com

"All it takes is a little practical experience to blow the he!! out of a perfectly good theory." --- Lloyd Rosenquist, charter member AWS, 1919.
Reply With Quote
  #12  
Old 01-30-2019, 01:42 PM
blue62 blue62 is offline
Member
 
Join Date: Aug 2016
Location: Woodland Wa.
Posts: 315
Default

Kent,
Very interesting information about using the torch to find loose and or tight area's.
Thank you for that tip
__________________
Dave Bradbury
Reply With Quote
  #13  
Old 01-31-2019, 03:52 AM
Gojeep's Avatar
Gojeep Gojeep is offline
MetalShaper of the Month March 2015, March 2020,, June 2022,Aug 2023
 
Join Date: Nov 2013
Location: Eastern Melbourne, Australia
Posts: 2,986
Default

As mentioned, get the ridges perfect first. Can pull out a lot of the low crown areas with it.
__________________
Marcus
aka. Gojeep
Victoria, Australia
http://willyshotrod.com

Invention is a combination of brains and materials.
The more brains you use, the less materials you need.
Reply With Quote
  #14  
Old 01-31-2019, 07:55 AM
Jaroslav Jaroslav is offline
MetalShaper of the Month April 2020, September 2021, November 2022
 
Join Date: Dec 2012
Location: Czech Republic
Posts: 2,601
Default The arc is truncated.

This recess was created when the internal arc was repaired. After cooling down, you get shorter. If you release tension in the arc - the arch elongates the depression disappears. I think you must to cuting ......
You can not weld this part at once. You must weld yourself gradually. Provide 15mm C02. Then weld the gas or Tig. Gradually, do not heat too much.
When will you must cuting it three times, you'll know what's you doing wrong.
But good work. You to continue.
__________________
Jaroslav
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

All times are GMT -5. The time now is 05:47 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.