Gallery, Projects and General > How do I??

Woodscrew Thread Cutting

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No1_sonuk:
@ JasonB:
My lathe is a Chester DB7VS.  That's a "fiddle with change gears" type of machine, rather than selectable gearbox, so it's more likely I can make up a suitable ratio.

@andyf:
The objective is to insert this part into a hole in a block, then screw another dowel into the cross hole (using something like John S suggests) through the block, forming a right angle.  Robustness isn't an issue, it's a visual prop that's not going to be strained.
The dowel may be resin coated to help get a glossy finish.  That'd also help split resistance.

It is only a 1-off, so learning/acquiring the brazing equipment is a bit too much, methinks.

@Dave BC:
Your comment about epoxy gives me an idea.  I could make the pin I want with a machine thread then epoxy it into the part you suggest.  That'd also make it easier to adjust the length of the pin - I can keep modifying and trying it until it fits, then epoxy it.
I think we have a winner.  :thumbup:

@John S:
The cross-drilled part needs to be too short to screw on as you suggest.  As said above, I do intend to use something like you linked to screw into the cross hole in the pin I'm making.

John Hill:
This is what I would do,  make the part with the eye and drill a hole in the base then take a regular wood screw and cut off the head then Loctite the plain part of the wood screw in the hole.

But then I am lazy.

CrewCab:
Guys I think we are loosing the plot a little, we don't need a wood screw, it's a screw made from wood ........... slightly different  :smart: .......... as Jason and Andy said the 2 tpi or whatever is not practical for a metal lathe ................ have a look here

http://www.timberframe-tools.com/shop/tools/joinery/wood.htm

It seems similar to metalworking, but just using that  .............  "brown stuff"  :dremel:

CC

No1_sonuk:

--- Quote from: CrewCab on March 15, 2010, 05:05:26 PM ---Guys I think we are loosing the plot a little, we don't need a wood screw, it's a screw made from wood
--- End quote ---
Actually, CC, it IS a metal woodscrew that I want.  Threaded wood wouldn't be resilient enough to be assembled and disassembled regularly.

CrewCab:

--- Quote from: No1_sonuk on March 15, 2010, 05:16:42 PM ---Actually, CC, it IS a metal woodscrew that I want.  Threaded wood wouldn't be resilient enough to be assembled and disassembled regularly.  
--- End quote ---

Dam .......... missed the plot again somewhere along the line, :hammer:  

Having looked again I can see what you need, the picture reminded me of a wooden screw from a while back, anyway it's one of these I presume



I use a few, long one in the butt and short one in the fore stock

CC

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