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A question for anyone who has made a rotary tool shank.
(Pete Logghe) wrote
OK, it seems you want a holder for Dremel type cut off disks.
The kind that Dremel makes, and sells.....
To use in a flexible shaft..
The shank from Dremel is dirt cheap.
And, the center is drilled on center already.
If you are determined to make something yourself,
The difficulty as you imagined is to get the screw
hole exactly on center...
Thst could be tough with a drill press or a lathe.
If you can use a drill press, you can take a small
block of aluminum, or steel, and drill and tap
for a screw.
Turn the block over, and drill just big enough for
the shank you are going to use.
The block should be clamped securely, and the hole you
just drilled will intersect with the screw hole you
jst made.
This allows you to put the shank into the hole, add
a screw to clamp it. If the block was clamped securely all
this time, the shank is now exactly lined up with the
drill press.
Now, you can drill and tap the screw hole in the end
of the shank you are making.... It will be lined up
with the shank since the shank is inserted into the
hole you just drilled in the small block.
Without a drill press, or lathe, it will be much
harder to get the screw hole in the shank lined up
exactly on center.
It might be possible. But it would MUCH easier to
earn enough money to buy the shank from Dremel,
for example, then to struggle without the proper
tools to make it.
I don't think I spent over $4.00 for mine.
Pete
I appreciate your reply.
I think that making a dead center hole is pretty easy. I put the shank in
the rotary tool and hold a sharp drill bit against the end. With the
material turning fast enough, it should be near perfect.
An alternative method to hold the drill bit is to drill down into a block
of wood, remove and roughen the bit a little, and then super glue it upside
down in the hole. Keeping the block clamped to the drill press base might
help. Then use that block of wood with the bit sticking upwards, under the
shank which is turning in the drill press.
I think that might be what you are saying. But using a sharp drill bit and
the fast spinning rotary tool without clamping might be better for a really
precise hole. It could be flared a bit on the end but that's probably OK.
Time will tell.
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