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melting a hole
is there a name for this technique?

(1 like)
Flow drilling or friction drilling, I believe.

http://m.youtube.com/watch?v=NhkWINPRK3A&desktop_uri=%2Fwatch%3Fv%3DNhkWINPRK3A

Related to friction welding/stir welding.
(1 like)
 

paul wheaton wrote:is there a name for this technique?



INSANE!!

Thermal drilling. The idea is not just to drill the hole, it's to create a bushing to support a larger, more substantial base for tapping.



Friction Drilling
So I left, I came home, and I ate some pie. And then I read this tiny ad:
Solar ovens, haybox cooker - What would you build to go with a rocket oven?
https://permies.com/t/89917/Solar-ovens-haybox-cooker-build


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