Are they intentionally friction drilling the hole to build up the hole walls, so that they can then insert a threaded insert into the hole, such that the insert will have more support on its perimeter?
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Are they intentionally friction drilling the hole to build up the hole walls, so that they can then insert a threaded insert into the hole, such that the insert will have more support on its perimeter?
Not in the GIF version, but could be done. Isn't any 'flash' remaining around the insert, a PITA to remove, doubly pointless application of thermal drilling. Rim of insert protrudes above parent metal. Thermal drilling [ferrous] in a wall thickness ~ .5 diameter creates a topside depression somewhat like a countersink; in most cases, a beneficial feature.
IMHO insert is in a standard drill hole, versus tapping a thermal drilled hole. Can't justify why the GIF shows two thermal-drilled holes. Mayhaps I'll re-visit GIF and re-evaluate.
My 'edit' button hasn't worn out yet!
Insert GIF, thermal drill has a head to roll the upper perimeter into a rim. But the flash below isn't visible, just the insert.
And still, 'edit' button hasn't worn out.
Aluminum stir welding.
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Just how is that motor working? Is the motor and wiring on the other side?
Ralph