Big Chuck + Aluminum Back Plate + Little Lathe = Big Problem

[Jeff.64]

Three M6 screws in an aluminum back plate does not have as much holding power as you would think.
My guess is the holes in the back plate were not threaded properly, i.e. tap drill too big or not enough threads.
I thought this might be good for people who try to work outside a machines capability.
I hope the guy or gal suffered only a good scare. The link only works on YouTube.

www.youtube.com/watch?v=gdTzpYJa5xE

 

[markba633csi]

Frisbee chuck!

 

[pontiac428]

That guy needs a bigger lathe!

 

[jwmay]

Is there no sound? I sure can’t make any conclusions about what happened based on what I saw. But I hope he got through it ok.

 

[markba633csi]

If that landed on his big toe he would be in for a world of hurt

 

[RaisedByWolves]

Is there no sound? I sure can’t make any conclusions about what happened based on what I saw. But I hope he got through it ok.

Yeah, sound would help.

It looks like aside from everything else, he plunged the cutter into the side of the part that already had too much stickout and the rotating part walked on top of the cutter.

I’m thinking he also wrecked the spindle nose.

 

[GeneT45]

Yeah, sound would help.

It looks like aside from everything else, he plunged the cutter into the side of the part that already had too much stickout and the rotating part walked on top of the cutter.

I’m thinking he also wrecked the spindle nose.

I'm thinking the part had an absurd amount of runout to begin with. Yes, you can turn eccentrically, but when one end is centered and the other end is fractional inches out of alignment you need to fix something before trying to cut...

GsT