Found some Good Cheap Couplings!

I had bad Z wobble. i changed all my bushings to linear bearings, and had to do something about the couplers.
Wondering the hardware store, i found these ones! They are used for coupling rubber tubing to welding equipment. they are 8mm on one side and 6 mm on the other. some heatsheriking tube on the 5mm motor shaft worked like a charm.
Had to shave the threads on the rod to fit the 8 mm bit.

My motor shafs have a hole, so a drilled one on the couplings too, so i can take advantage of it.
I now got zero Z wobble and the couplings just costed 2 euros! sweeet!
check the pics and the video:

this is better than the 5/16 coupler idea i mentioned to someone! please let everyone know how long they last!
thanks!

Nice one Macsoft, obviously another man like myself, wandering the universe thinking "Hmmm... I wonder if I could use that on my RepRap build?"

What did you use to attach the threaded bar to the 'coupling'? Did you just file down the treads a bit by hand?
Regards,
No.6

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[numbersixreprap.blogspot.com]

me likes big noisy tools! you can file it by hand... or you can grind it in 10 seconds with a power grinder then hammer it in on the coupling.
thanks

That will do it too!

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[numbersixreprap.blogspot.com]