Question about cutting blanks via water jet

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BubbaW

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Feb 17, 2019
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I'd like to have some blanks cut out using a water jet service, but I have a couple of questions for someone who uses that service

I would normally drill holes to take weight out of the tang, but I'm wondering if there's a better option when doing water jet. Skeletonizing with triangular (or some other shape) shaped cuts?

And do you typically have your pin holes spotted with a small diameter hole? Then drill and deburr before HT? Although it sounds like some places do HT after WJ, or blades are sent out to HT immediately after. In that case, holes are cut to size and reamed after HT?
 
Always undersize holes for waterjet. I would have them remove pockets as well for weight savings. I usually just scale down the handle and insert it inside leaving about .300" around the perimeter and the holes. I usually just spot .070" holes and then drill and ream to size. I think most waterjets are plus/minus .010" so they cant do holes to final dimension.
 
Stang Bladeworks said:
I would have them remove pockets as well for weight savings. I usually just scale down the handle and insert it inside leaving about .300" around the perimeter and the holes.
Click to expand...

I'm trying to envision what it means to "remove pockets"? And you insert a scaled down handle inside? Sorry, I just can't quite picture what that would look like.
 
BubbaW said:
I'm trying to envision what it means to "remove pockets"? And you insert a scaled down handle inside? Sorry, I just can't quite picture what that would look like.
Click to expand...

He means that he has the waterjet skeletonize the tang; he creates the shape of the removed material by scaling down a copy of the handle outline, resulting in a 0.3" wide perimeter of remaining material.
 
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