Oops.

[zorlack]

So I've nicked hold-down screws before. Usually the bit gets dinged up and a chunk disappears from the screw.

This is a new one for me.


8142

The screw got sucked up into flute of the end mill, then spun around at router speed burning the MDF and making the hole bigger.


8143

Here's the comet it left on the board.

Neat!

[erik_f]

Even better when a chunk of carbide goes wizzing by your head at 200MPH!

[gabepari]

Dave, I found one of those pesky screws in some import birch ply (I refuse to cut the stuff anymore), AND I wasn't using any screws to hold the sheet down. It did something similar, but didn't stay attached to the bit, very cool!! Well, not cool, but.... very cool


Gabe

[myxpykalix]

I guess its better it gets embedded with the bit, then in your skull.

[zorlack]

True that. I don't have these lightning fast reflexes for nothin!

This is the kind of mistake that I make when I start using the bot after taking a few months off. (The other mistake I make is not leaving a large enough margin for proper hold-down)

This one was interesting because I'd never seen them get tangled like that. The bit itself (Bosch) stayed in one piece, but the cutting edges were mangled.

High-Res Goodness! (http://flickr.com/photos/zorlack/3304993601/)

-Dave

[david_gardner]

Threadjack.

Which dust foot do you have?

[zorlack]

It's a home-made dust foot (http://flickr.com/photos/zorlack/2652898630/) that I made on the bot, then I stapled on a strip-brush from McMaster.

[gene]

Dave,
Be glad you were not using a vac for the hold down or you would be amazed at the speed a fire would or could have started. I'm glad you or the bot was not hurt. keep up your good work. Gene

[zorlack]

On the other hand, I certainly wouldn't have hit a hold-down screw if I was using vacuum hold down


The epilogue: The finished part was completely salvageable and I finished putting it together today. The only trace of the accident is a scorch mark on the left-hand side of the piece.

This piece (http://flickr.com/photos/zorlack/3308346364/) will end up being a 1930's radiator cover in a production of Twelve Angry Men set in the 1970s.

So the little dent in the left side must have happened during its 40 years of use!

[wberminio]

Dave

Nice job on the radiator.

I've made simialr enclosures for radiators in pre-war buildings in the upper west side of Manhattan.
The grill is usually a custom metal insert we have custom made.
You're right on with your design.

The "slight defect" is the perfect touch of authenticity

Erminio