Non gold project

[slowflow]

I'm building a bow press and would like an acme type rod & nut 16mm, 600 long but am having difficulty finding it locally. Google is not being friendly. Any help is appreciated.

Barry

 

[y4k]

I'm building a bow press and would like an acme type rod & nut 16mm, 600 long but am having difficulty finding it locally. Google is not being friendly. Any help is appreciated.

Barry

Threaded rod?

 

[backcreek]

Hay Barry,
What about a screw out of an old vice?

 

[Tathradj]

I was thinking that.
Square thread or pitched < ???
.?
Hi Mate, Long Time no see.
How much pressure are you wishing to generate. ???

 

[PabloP]

You can get cheap and simple "all thread" of 600mm lengths, at several hardware stores, but I don't recall seeing anything as large as 16mm, definitely 12mm. Not square thread of course, but may suffice until the right thing comes along.

Also what about the screw assembly from one of those Scissor style jacks?

Rob.

 

[slowflow]

Looked at jacks but generally too short.
I may have to go threaded rod.
looking at about 100 lbs.

 

[MJB]

Hey slowflow,

I have built a couple of bow presses in my time. the first one was a solid unit with arms on it kinda shaped like a big U. In the bottom beam I mounted a turnbuckle with a fabric strap to pull down on the riser...worked a treat.

I left it somewhere so I ended up building another. This time it is similar to the more portable ones you can buy. Hooks that latch on to the ends of the limbs connected with a wire rope passing through a tensioning device in the middle to take up the strain. It has a 5/8 UNF thread which makes compressing my 70lb bow no problemo , will post a pic of that one tonight if you like.

100lb....
What are you trying to string...and english long bow?

 

[slowflow]

MJB
Just a guess at pressure + a safety margin.
My bows only run 60 but my sons 70 and a bit.(5 bows total)
Making a ezypress copy.to cover up to 36 ata.

 

[Tathradj]

Slowflow,
Would this be what you are looking for. ???
.
http://www.ebay.com.au/itm/TRPZ16X4...17?pt=LH_DefaultDomain_15&hash=item19d8db62bd

 

[MJB]

wow...5 bows would definitely keep you busy.

Here is my bow press..

A 5/8th UNF thread will allow for easier turning than a large course thread. A little heat shrink around the ends to protect the limbs and the thing works a treat. And don't laugh at my bow, its a Martin Phantom about 15years old but it still shoots straight

 

[SmokeyStu]

Although not the most portable of devices, a modded hi-lift jack would be the biz for 600mm of movement. Quick, easy, and dual purpose too.

 

[RotGrub]

This is my go to supplier for hardware and many other items. I don't know if they ship to Australia but I'm sure there something like it in Australia. If you go to the home page it has several categories to help find what your looking for. Just looking through their inventory gives a DIY many options.

http://www.mcmaster.com/#general-purpose-acme-rods/=xhah33

 

[slowflow]

Thanks for the replies.
Ordered the one Doug found.

Seems you can get everything easily in the USA but post kills it.
Making something like this.