0

I need rod that can push two blocks of wood apart. The space is about 16" wide.

So, basically it is the opposite of a turnbuckle, kind of like a tensioned shower rod.

Is there any kind of standard mechanical device to do this, and if so, what is it called?

3
  • kitsplit.com/rent/… Is that what you're looking for? I Googled "threaded spreader." – Duston Dec 10 '20 at 15:20
  • Permanent or temporary? If temporary I'd use a hydraulic car jack and some wood pieces of the right length. – alain Dec 10 '20 at 15:45
  • 1
    Or any other type car jack. – blacksmith37 Dec 10 '20 at 15:49
2

Where we need to separate like you are mentioning we use what the millwright call jacking bolts. These are heavy 1/2” or better. In some cases they use a threaded rod (short distances up to about a foot). If longer than a foot they use the same or larger thread stock and weld it onto a plate or tube steel the tube steel just a 2x2 can span 6’ - 8’.

The millwrights usually use national course threads but I have seen them use acme square on 2” thread stock for a heavier load (several tons) needed to be lifted but maintain adjustability.

I don’t know if there are other ways like a reversed turnbuckle but the millwrights use standard stock and the nuts and washers on the inside push the parts away from each other and they call them jacking bolts.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.