I want to make some wooden screws (threaded rod) for several projects
and would like some input from anybody that has done this on what
material you used.
What is the preferred wood to make these from? I have one in a shop
stool I made but it tends to warp slightly depending on the humidity.
Would it be better to use a single straight grained piece or turn the
dowel from glued up stock to reduce the tendency to warp?
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BRuce
On Sun, 07 Mar 2004 08:47:32 -0500, BRuce <BRuce> wrote:
>I want to make some wooden screws (threaded rod) for several projects
>and would like some input from anybody that has done this on what
>material you used.
>
>What is the preferred wood to make these from? I have one in a shop
>stool I made but it tends to warp slightly depending on the humidity.
>
>Would it be better to use a single straight grained piece or turn the
>dowel from glued up stock to reduce the tendency to warp?
hard maple.
cut it slightly oversize, let it sit for a while, joint it straight,
let it sit for a while, check it, let it sit for a while....
then cut the threads
Isn't hickory prone to chipout or tearout?
Andy Dingley wrote:
> On Sun, 07 Mar 2004 08:47:32 -0500, BRuce <BRuce> wrote:
>
>
>>I want to make some wooden screws (threaded rod) for several projects
>>and would like some input from anybody that has done this on what
>>material you used.
>
>
> How big ? What pitch of thread ? How much force ?
mostly 3/4", whatever the "standard box cutter pitch is, assume moderate.
>
>
>>What is the preferred wood to make these from?
>
>
> For small stuff, box is good. Applewood and other slow-growing
> fruitwoods are excellent, if you can find a piece big enough. Ivy is
> another good one, if you can find it. Even holly might be worth
> trying. For big ones (like vice screws), it depends on your local
> availability. Beech is pretty good (my local choice) but I'd guess
> hickory is worth a look too. The right hard grade of maple is another
> good choice.
>
> Lignum vitae is very good, especially for nuts. It's strong, wears
> well and is self-lubricating. It's also endangered and unavailable -
> however sacrificing an old mallet to make the nut for a new workbench
> or cider press isn't unreasonable.
>
> Ash and oak are poor choices. Oak tends to be brittle, ash wears
> quickly.
>
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BRuce
Hi Bruce,
Ideally, you want a very close-grained and dense wood for thread-cutting,
for example Box. A glued-up blank might make it a bit more stable if it's
going to live in an environment with large RH changes, but otherwise
well-seasoned straight-grained stuff will do fine.
Cheers,
Frank
<BRuce> wrote in message news:1078667412.918303@sj-nntpcache-3...
> I want to make some wooden screws (threaded rod) for several projects
> and would like some input from anybody that has done this on what
> material you used.
>
> What is the preferred wood to make these from? I have one in a shop
> stool I made but it tends to warp slightly depending on the humidity.
>
> Would it be better to use a single straight grained piece or turn the
> dowel from glued up stock to reduce the tendency to warp?
> --
> ---
>
> BRuce
Hey Bruce,
I've had to make threaded dowel and matching nuts in a lot of different
species and sizes, haven't had any comebacks. As long as the stock is dry,
stable and straight grained, you shouldn't have a problem.
Lee Valley sells an american made jig, for threading and tapping...works
great after some trial and error.
Cheers,
aw
On Sun, 07 Mar 2004 08:47:32 -0500, BRuce <BRuce> wrote:
>I want to make some wooden screws (threaded rod) for several projects
>and would like some input from anybody that has done this on what
>material you used.
How big ? What pitch of thread ? How much force ?
>What is the preferred wood to make these from?
For small stuff, box is good. Applewood and other slow-growing
fruitwoods are excellent, if you can find a piece big enough. Ivy is
another good one, if you can find it. Even holly might be worth
trying. For big ones (like vice screws), it depends on your local
availability. Beech is pretty good (my local choice) but I'd guess
hickory is worth a look too. The right hard grade of maple is another
good choice.
Lignum vitae is very good, especially for nuts. It's strong, wears
well and is self-lubricating. It's also endangered and unavailable -
however sacrificing an old mallet to make the nut for a new workbench
or cider press isn't unreasonable.
Ash and oak are poor choices. Oak tends to be brittle, ash wears
quickly.
--
Smert' spamionam