#51
|
|||
|
|||
Couldn't you use an undersized punch "capped" with an initial draw, correct any imperfections in the surface and use it to form all the final parts rather like stretch presses use to protect kirksite dies?
__________________
Paul |
#52
|
|||
|
|||
Quote:
First sphere is finished and silver soldered to the stainless steel corrugated tubes that it should connect. If any silver solder experts are reading this thread, I could use some advice on how much flux to use. I don't know if I use too much or maybe using too much heat, but the flux residues turned black and needed sanding before it would let go of the metal. DSCF4249.jpg DSCF4250.jpg DSCF4252.jpg DSCF4253.jpg DSCF4256.jpg
__________________
Martin |
#53
|
|||
|
|||
Quote:
Steam / boiling water should loosen the flux "glass." Flux residues vary with the type and heat-range (high temp, med. temp, low temp) of the brazing flux. Low-temp brazing fluxes are used with 45-56%Ag silver-brazes, leave a white residue, and with active ranges of 950F -1250F / 510C - 675C
__________________
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; 10-09-2016 at 01:16 AM. |
#54
|
|||
|
|||
Looks really neat - but what is it?
Will
__________________
Here to learn. William Pointer |
#55
|
|||
|
|||
Replacement for the orange 3D printed sphere. It's a propane-driven sound cannon for RC planes. It's hard to get on video, but the shots are so loud you need ear protection when you are within 5 meters of the sound cannon. It needs to be louder than the gas engine on the plane.
__________________
Martin |
Thread Tools | Search this Thread |
Display Modes | |
|
|