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Forum: Automotive Projects 10-12-2019, 11:57 AM
Replies: 7
Views: 277
Posted By crystallographic
Student builds first car body - GT40

I just got back from San Antonio visiting a long-time student and being at the unveiling of his repro of an Alan Mann GT40, done in bare aluminum.
He planned for it to coincide with the 50th...
Forum: Automotive Projects 10-02-2019, 09:52 AM
Replies: 79
Views: 11,799
Posted By crystallographic
Very nice progress, Antoine. Patient planning,...

Very nice progress, Antoine. Patient planning, careful execution.
Very special project.
Forum: Automotive Projects 09-25-2019, 06:27 PM
Replies: 15
Views: 1,104
Posted By crystallographic
Model A Ford roof insert

I did post doing a Model A Ford roof insert here, on my albums. Click on my sig and pick that album out from the other albums. Should be sorta helpful?


Otherwise, it is not that hard to hammer a...
Forum: Introductions 09-23-2019, 11:44 AM
Replies: 5
Views: 220
Posted By crystallographic
Hi Jeff, Welcome to the forum. The P9 is...

Hi Jeff,
Welcome to the forum.
The P9 is physically a big machine, and so from my experience I think a P5 would be good for your 16 and 18ga steel. The P3/13 would be a little light. P7 would be...
Forum: Automotive Projects 09-22-2019, 03:51 PM
Replies: 12
Views: 906
Posted By crystallographic
Neat and tidy results, Robert. Great to watch...

Neat and tidy results, Robert. Great to watch along with your process. Yep, one piece rust-repair complexities are great instructors, confidence builders.
Toughing out the 14ga gave you a stout part...
Forum: Basic questions and answers 09-20-2019, 12:22 PM
Replies: 31
Views: 2,330
Posted By crystallographic
Jaro, Nice idea to make the sheet conform and...

Jaro,
Nice idea to make the sheet conform and then trim the part out of it. I like this thinking very much.
I lost my 94 year old machinist, Milo Franklin, in July. He ran a shop of 35 men for...
Forum: Basic questions and answers 09-17-2019, 12:05 PM
Replies: 31
Views: 2,330
Posted By crystallographic
25T is a very useful machine, Jaro. I have been...

25T is a very useful machine, Jaro.
I have been resisting a 250T four post for a while ....
Forum: Basic questions and answers 09-16-2019, 02:04 PM
Replies: 31
Views: 2,330
Posted By crystallographic
This looks good, Jaro. Two pieces welded may be...

This looks good, Jaro.
Two pieces welded may be easier than making one long snaky one. ;)
Forum: Automotive Projects 09-13-2019, 11:52 AM
Replies: 38
Views: 4,630
Posted By crystallographic
Nice smooth work. header flange is accurate and...

Nice smooth work.
header flange is accurate and crisp. Good to see.
What gloves are you wearing?
Forum: Introductions 09-08-2019, 02:29 PM
Replies: 5
Views: 166
Posted By crystallographic
Welcome aboard, Denny. I like old bikes and am...

Welcome aboard, Denny.
I like old bikes and am particularly fond of the twin-cam Pierce single.
Glad you got to fly an old bipe in competition ....

( I was scheduled to teach at a "Fermi Lab"...
Forum: Basic questions and answers 09-08-2019, 02:24 PM
Replies: 31
Views: 2,330
Posted By crystallographic
Hi Jaro, Yes, I think your idea = "terrible...

Hi Jaro,
Yes, I think your idea = "terrible job."
We have duplicated many moldings from solid stock of brass, aluminum and steel over the years. Polishing and/or plating after drilling and tapping...
Forum: Basic questions and answers 09-06-2019, 12:33 PM
Replies: 31
Views: 2,330
Posted By crystallographic
Hi Jaro, I was thinking of your part here,...

Hi Jaro,
I was thinking of your part here, yesterday.
I have made some trim parts like this, over the years.
The way I would make this (and this is not an "experiment" to see how it will work) is...
Forum: Introductions 09-06-2019, 12:18 PM
Replies: 2
Views: 146
Posted By crystallographic
Hi Marko, Welcome to the forum. Lots of info...

Hi Marko,
Welcome to the forum. Lots of info and help here.
Forum: Welding Sheet Metal 08-20-2019, 06:28 PM
Replies: 10
Views: 1,388
Posted By crystallographic
electro-polishing stainless steel

see under "electro-polishing"
also "Acid dip"
Forum: Automotive Projects 08-07-2019, 05:08 PM
Replies: 38
Views: 4,630
Posted By crystallographic
Wow, sales going UP.

Wow, sales going UP.
Forum: Welding Sheet Metal 08-03-2019, 05:54 PM
Replies: 11
Views: 1,379
Posted By crystallographic
Hi Neil, You are getting good info and your...

Hi Neil,
You are getting good info and your work shows improvement.
Fits, tacks, amps, fusion, hammering to planish, filing to metal finish....
sanding, coloring, sanding, filing .... lots of...
Forum: Automotive Projects 08-01-2019, 01:15 PM
Replies: 34
Views: 4,112
Posted By crystallographic
You did a super nice job on that piece, Steve....

You did a super nice job on that piece, Steve. Kudos!
Forum: Automotive Projects 07-27-2019, 06:04 PM
Replies: 15
Views: 1,531
Posted By crystallographic
Nice work, Bernhard. You really had to work...

Nice work, Bernhard.
You really had to work some shape into those halves.
And seeing you filing up top really shows how small the car is - almost a toy.
Sauber!
Forum: Introductions 07-27-2019, 06:00 PM
Replies: 9
Views: 572
Posted By crystallographic
Good to see a project like this, Brycen. ...

Good to see a project like this, Brycen.
Welcome to the gang.
Forum: Welding Sheet Metal 07-17-2019, 02:03 PM
Replies: 6
Views: 854
Posted By crystallographic
neutralizing aluminum gas welding flux

Specifically to the question about neutralizing AGW flux in hard-to-reach areas - I use a 25% phosphoric with either a brush or a pump spray.

(Must for Rust has been my go-to for many years)
It...
Forum: Basic questions and answers 07-09-2019, 01:37 PM
Replies: 3
Views: 1,047
Posted By crystallographic
Hi Bruce, I think you should put a little crown...

Hi Bruce,
I think you should put a little crown in the central area of your panel, staying back from edges about 6in all around.
Then do your #2, shrinking one edge and then the other, back and...
Forum: Individual Classifieds 06-28-2019, 02:49 PM
Replies: 3
Views: 880
Posted By crystallographic
Passed up a Marvel 20+ years ago - no room for...

Passed up a Marvel 20+ years ago - no room for it. Got a big Well Saw instead.
Marvel saws are the primo choice - but sometimes they are really worn and then need a LOT of rebuilding effort.
Forum: Introductions 06-27-2019, 01:58 PM
Replies: 3
Views: 345
Posted By crystallographic
Okay ! Great! Thanks. But - I think working...

Okay ! Great!
Thanks.
But - I think working test pieces of 6061 will not really match wing skins as they are "usually" 2024T3.
Forum: Introductions 06-27-2019, 11:24 AM
Replies: 3
Views: 345
Posted By crystallographic
Welcome Bob. From my own experience, 6061 T6 is...

Welcome Bob.
From my own experience, 6061 T6 is significantly easier to straighten than 2024 T3.
Good Luck,
Forum: General Discussion 06-23-2019, 09:01 PM
Replies: 6
Views: 1,020
Posted By crystallographic
Nice project. Well done!

Nice project. Well done!
Showing results 1 to 25 of 2203

 
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