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FW: Jump ringer problems


#1

Hi Irene,

Coincidentally, I just had a nice conversation yesterday with Ray
Grossman… he’s on the road and might be slow to reply. I find this
tool to be among the best investments I’ve made, as I make sterling
rope chains and the number of links would be prohibitive to cut by
hand.

The only problem I’ve had is the dulling of the blade. I’ve done in
two of them so far… not bad for the time I’ve used it but I think
it was partially my fault. I think I let the blade get overheated,
and probably wasn’t using enough lubricant (Burr Life). Make sue you
use plenty of lubricant. I have also started making shorter coils
so I don’t have to go all the way to the ends of the cutting jig. I
also think it’s important to keep the speed up as the blade takes on
the load. A stronger “S” motor is preferred over the “CC” due to the
increased torque.

The only reason I can think of that the blade would shatter is if
the handpiece was not kept perpendicular to the direction of the cut,
causing a binding in the coil. Even at that, I would expect the blade
to slow and overheat, as opposed to shatter. You could suspect a
defect in the blade, but I would think probably not multiple blades.
Also, it seems to me if the spinning blade caught the steel of the
cutting jig it could also be disastrous. This has probably already
occurred to you.

P.S. I’m expecting three replacement blades to arrive from Rio
Grande today. The second blade I toasted was just this week!

Hope this is of some help,

Dave

Dave Sebaste
Sebaste Studio and
Carolina Artisans’ Gallery
Charlotte, NC (USA)
dave@sebaste.com