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
  #21  
Old 02-16-2019, 04:11 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

Thank you for showing how you go about 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
  #22  
Old 02-18-2019, 12:46 PM
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 Finish work - "metal finishing"

Thank you Marcus and John.


The surface is decent but needs some fine-tuning.
So, by using a file along with a spoon and "dolly" this surface should come around nicely.


P1020002 copy.jpg
I use my custom-bent Super Shear to check file the surface.
This levels weld high spots and "checks" the surface, showing me the low spots where the file does not cut.
P1020006 copy.jpg
Here is the spring steel spoon striking a sheet of .050 5052, which is supported by my "dolly" - the marlin spike. The round dots show me where I am striking.
P1020021 copy.jpg
Here is the technique being used on the panel. remember that I am lifting up with the dolly as I strike down with the spoon. Inertia works with me to lift up the low spots. The dots are my accuracy indicators.
P1020024 copy.jpg
I check file again. Each filing removes only .001-.002" if done correctly. When I teach this in workshops I show the thickness measuring along the way.
P1020025 copy.jpg
Full view of the patch after metal finishing. Remember that this is paint-grade so I am not doing a super nitpick along the weld seam. Prime/sand coats will level it up nicely. Again, the patch center is untouched, and my work is only concentrated along the HAZ.
I learned long ago to be economical with my efforts.
And - why overwork the panel? Overworking always leads to oilcans.
P1020029 copy.jpg
A light sanding with 320 grit evens up the scratches. Total thickness loss is .003 to .004" - no big deal when the panel is tight - and when the painter does not sand more. (I had an Aston DB7 job last summer that turned out nicely - but the silly inexperienced owner went against my specific enumerated instructions, and sanded away to his heart's content .... and now his doors must be re-skinned. -- No longer my job, sorry. )

Next up: the delicate complicated details.
__________________
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.

Last edited by crystallographic; 02-18-2019 at 12:57 PM.
Reply With Quote
  #23  
Old 02-18-2019, 04:36 PM
Charlie Myres Charlie Myres is offline
Member
 
Join Date: Jun 2013
Location: Narrogin, Western Australia
Posts: 579
Default

i love learning from the Master - top work Kent!

Cheers Charlie
__________________
Why does dust stick to everything, but nothing sticks to dust?
Reply With Quote
  #24  
Old 02-20-2019, 06:18 PM
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

Quote:
Originally Posted by Charlie Myres View Post
i love learning from the Master - top work Kent!

Cheers Charlie

Thank you Charlie.
__________________
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
  #25  
Old 02-20-2019, 07:21 PM
Kerry Pinkerton's Avatar
Kerry Pinkerton Kerry Pinkerton is offline
Administrator
 
Join Date: May 2009
Location: Near Huntsville, Alabama. Just south of the Tennessee line off I65
Posts: 8,321
Default

Good stuff Kent. Thanks for posting the how to.
__________________
Kerry Pinkerton
Reply With Quote
  #26  
Old 02-20-2019, 07:47 PM
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

Quote:
Originally Posted by Kerry Pinkerton View Post
Good stuff Kent. Thanks for posting the how to.

Thanks Kerry.
__________________
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
  #27  
Old 02-20-2019, 10:37 PM
sblack sblack is offline
Member
 
Join Date: Sep 2011
Location: Montreal
Posts: 382
Default

I like the bent file. Allows you to get into small areas. But it would hurt to take a torch to one of those files.
__________________
Scott in Montreal
Reply With Quote
  #28  
Old 02-21-2019, 01:04 PM
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

Quote:
Originally Posted by sblack View Post
I like the bent file. Allows you to get into small areas. But it would hurt to take a torch to one of those files.

... I never felt a thing ... (except successful) ...
__________________
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
  #29  
Old 02-22-2019, 03:38 PM
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 Details, details ...

P1010274 copy.jpg
This was a fun little patch.
I ordered up some flare dies for this size opening, and cut and hole-sawed out the opening from some appropriate flat stock and then flared it. (Easier than trying to shape the little piece.) Then I cut out the section I needed, trimmed it to fit, and began welding it in.
P1010275 copy.jpg
Since this is 5052 (likes to back-crack) the welding sequence is non-trivial.
Here I have numbered the welds in the sequence they were made. - You already knew this sequence, though - right?
P1010301 copy.jpg
I also weld the back side in the same sequence, otherwise the cracks start obediently following your efforts.

P1020037 copy.jpg
Next up was the center hole up top, for the clock. I ordered up a correct punch/flange die set and then made up the patch. Witness mark is vital to "clocking in" a round patch, unless chasing one's tail is a fun thing.
P1020053 copy.jpg
Sequence is not really important for welding this patch, although I always try to balance the tension across the patch as I weld, to limit unnecessary distortion. Here, the back side is welded nice and flat.
P1020070 copy.jpg
Panel is all finished, with the clock opening all nicely punched and flared, and with some repair areas lightly sanded with 320.
P1020062 copy.jpg
P1020067 copy.jpg
Nice even tidy job, ready for paint.

(The final count was 19 holes and cracks to be repaired.)
-end-
__________________
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.

Last edited by crystallographic; 02-22-2019 at 03:59 PM.
Reply With Quote
  #30  
Old 02-22-2019, 03:41 PM
Kevinb71 Kevinb71 is offline
Member
 
Join Date: Oct 2014
Location: South Dakota
Posts: 56
Default

That's a nice looking panel. Thanks for showing us your methods!
__________________
Kevin B
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 05:25 AM.

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