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  #11  
Old 07-22-2021, 01:25 AM
Jaroslav Jaroslav is online now
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Yes Kent. Somehow similar way. It would only be possible to shape it into a cutout and then finish it in EW. For ease of preparation.
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  #12  
Old 07-22-2021, 05:23 AM
xlr8tr xlr8tr is offline
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Quote:
Originally Posted by crystallographic View Post
Attachment 60578


Attachment 60579


Attachment 60580


Dia approx 3in.
Shapes vary a lot.
Consistency = nice.
This is an airplane part.
Traditional "old skool" method.

Kent,

A couple of questions if I may,

1. form looks to be MDF with a plywood base and clamping plates?

2. The nylon rivet set, do you shape it into a radius?

Many thanks
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Last edited by xlr8tr; 07-22-2021 at 05:29 AM.
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  #13  
Old 07-22-2021, 12:52 PM
crystallographic crystallographic is offline
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Quote:
Originally Posted by xlr8tr View Post
Kent,

A couple of questions if I may,

1. form looks to be MDF with a plywood base and clamping plates?

2. The nylon rivet set, do you shape it into a radius?

Many thanks

arrangement of parts for flow forming c.jpg
Upper "clamping block" = plywood, MDF, HDF, partikle "p'board", etc
Lower "Form Block" = oak, ash, maple, aluminum, HDF, MDF - directly depending on alloy, temper, thickness of metal being formed.



P1010658 c.jpg
etcetera - MDF upper clamp block and lower MDF form block



P1050429 c.jpg
"Rivet guns" used for this "flow forming" methodology. This is aviation stuff, dating to at least 1930's - first pneumatic rivet guns circa 1914.



NOT "rivet sets" at all - rather, "flow form tooling/tools."
Incapable of setting any kind of rivet, nohow.


Polymer schnoobles, of varying flavors. Color-coded by hardness.
Shaped for offsets, domes, flanges, joggles, etc. ... myriad shapes needed for aviation.
Attached Images
File Type: jpg P1120021 c.jpg (45.5 KB, 19 views)
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  #14  
Old 07-23-2021, 07:33 AM
Jaroslav Jaroslav is online now
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Kent, I just have a similar assignment you're showing. Looks like I'm will be using Pullmax. I don't know what the idea will be.

Yesterday I tried the repaired tool. I grinded the insert in the tool by hand and I was very angry. My anger did not subside even after a successful test. Tool with plastic inserts .....

I shaped the shape using Eckold, EW and hammer. Al 1,5mm.



DSC07690.JPG

DSC07692.JPG

DSC07695.JPG

DSC07704.JPG
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  #15  
Old 07-24-2021, 06:44 PM
crystallographic crystallographic is offline
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finished bulkheads, 2024-0, ready for treat c.jpg

Making all the bulkheads to rebuild a wrecked airframe, Globe Swift w/210.


P1120021 c.jpg
Heavy 5X CP rivet gun, and long+ short flow form tools w/various inserts.
Gooseneck and offset (pistol) handles still available on some models.
(I'm a fan of the gooseneck as it keeps my wrist directly inline with the barrel impacts.)
( trivia: I have reason to believe Northrop came up with the gooseneck in 1947 ... as they won the US National aviation riveting championships that year....)


( I was pleased to see parts mfg done via flow forming at both Erickson Air Crane (Sikorsky S64 models) ....
and at Columbia Helicopter (previously CH47 models .... now Boeing Vertol 107 and 234 models)....


Many other small aviation outfits make parts for their replacements/rebuilds/repairs this way, also.
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Last edited by crystallographic; 07-24-2021 at 06:51 PM.
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