28-04-2024, 09:51 AM
Hi,
After some years of putting it off I've finally started getting materials together to build a folding screen for my Ulsteroid.
The two problems I've come across are the 7/8" brass tube for the bottom tube and 7/8" half round steel bar for the side irons.
I can get 3/4" half round bar although I would have to buy a 3-metre length and I'm not totally sure it would be OK as the bottom tube of the finished frame has reinforcing around the ends which would mean that where it contacts the side irons it will actually be around 1" diameter. I don't have the facilities to mill it from round bar.
It also seems impossible to source 7/8" brass tube unless it's extremely expensive. I did think about using 22mm copper pipe as used in plumbing but am slightly concerned that soldering, especially silver soldering, might anneal the copper to the point where it becomes a bit too soft. It's also a bit thin which may be an issue where the wing bolts pass through it.
I know screens are available but I really can't spend something like £900.
Any suggestions / comments.
John.
After some years of putting it off I've finally started getting materials together to build a folding screen for my Ulsteroid.
The two problems I've come across are the 7/8" brass tube for the bottom tube and 7/8" half round steel bar for the side irons.
I can get 3/4" half round bar although I would have to buy a 3-metre length and I'm not totally sure it would be OK as the bottom tube of the finished frame has reinforcing around the ends which would mean that where it contacts the side irons it will actually be around 1" diameter. I don't have the facilities to mill it from round bar.
It also seems impossible to source 7/8" brass tube unless it's extremely expensive. I did think about using 22mm copper pipe as used in plumbing but am slightly concerned that soldering, especially silver soldering, might anneal the copper to the point where it becomes a bit too soft. It's also a bit thin which may be an issue where the wing bolts pass through it.
I know screens are available but I really can't spend something like £900.
Any suggestions / comments.
John.