imapseudonym said:

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I would also go straight to Carter, rather than the retailer. I would be surprised if their response were anything other than: we will ship a replacement out along with a pre-paid label to return the broken tool so we can understand what happened.

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Woodshop said:

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WOW.
looks to me it turned brittle when the flute was ground out by the manufacture that would cause a bad catch. she is lucky that piece didn't hit her.

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AHill said:

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After seeing that, I'm now 95% sure there was a defect in that tool. (I'm a metallurgical engineer by education.) The long jagged edge is classic of something we call brittle fracture. Brittle fracture occurs when things happen very quickly and the stress applied overwhelms the ability of the tool to bend or yield. Kind of like when you pull silly putty quickly. It breaks vs. stretches. It's possible, but unlikely a catch by itself resulted in brittle fracture. If you look at the surface of the crack, and see a bright part next to a shiny part, that's evidence of a void prior to the mishap. If there are lips on the edge of the crack that make a 45 deg angle to the tool, then it's ductile fracture (i.e., it stretched some before it cracked).



[blockquote]EightFingers said:

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She's ok, just a little embarrassed that it happened. She was turning some very hard eucalyptus. I bought the gouge at Craft Supplies so I'll give them a call tomorrow.
Another thing, this was not on a "big" lathe, it was on the Delta 1 HP lathe, she said it was set at speed "4", (10 is the fastest)

Here's a pic:

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