The Shop > Tools
Holding Thin Parts
sparky961:
This one seems so obvious that I'm sure there are a number of you guys out there that use it already. But remember that few things are obvious the first time around.
The problem is how you hold a very thin part on edge for machining, when your parallel is thicker than the part. The solution? Use another parallel (or anything else lying around) as packing between the part and the moveable jaw. Of course, keep the part as low in the vice as possible and cut so that the force from cutting doesn't twist the part out of shape. If extremely thin, you'll need to reduce your depth of cut accordingly so as not to damage the part.
Stilldrillin:
--- Quote from: sparky961 on January 10, 2015, 02:48:03 AM --- I'm sure there are a number of you guys out there that use it already.
--- End quote ---
Sparky.
I'm one of those guys.
But, as with any rarely used technique, it's good to have a reminder occasionally....... :thumbup:
Well done! :clap: :clap:
David D
Lew_Merrick_PE:
Another aspect on this that I have a set of blocks that are thinner than my usual suspect parallel used to clamp the "top" of the part that are tapped 3 places in a "V" pattern. Fit into those tapped holes are hex head cap screws that I turned the top face to a (convex) spherical shape that will support my parallel. This reduces the need for as many arms as Shiva when making the set-up and supports the clamping parallel if I have to trim more than a single part!
sparky961:
--- Quote from: Lew_Merrick_PE on January 10, 2015, 11:16:50 AM ---Another aspect on this that I have a set of blocks that are thinner than my usual suspect parallel used to clamp the "top" of the part that are tapped 3 places in a "V" pattern. Fit into those tapped holes are hex head cap screws that I turned the top face to a (convex) spherical shape that will support my parallel. This reduces the need for as many arms as Shiva when making the set-up and supports the clamping parallel if I have to trim more than a single part!
--- End quote ---
It sounds good, as the setup is admittedly hard to hold. Pictures would help though, as I can't quite envision what you're describing.
steampunkpete:
Clamping the thin component between two bits of sacrificial scrap is another possibility.
Once I soldered six thin sheets together, then machined and de-soldered. This yielded a number of identical thin components.
One could also solder a thin component to a piece of scrap.
There is always a way Grasshopper :med:
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