It's fairly heavy because I used 1.2mm 20x50mm hollow section tubing - but I can still lift if if I need to. It will extend over 2 metres high, but of course it doesn't really need to do that when lifting Bonsai pots, but it can also be used as a platform for reaching high places if necessary.
I looked round for a reasonably priced hydraulic ram and hand pump, but they were going to cost more than what it cost me to build the thing. So, I got a 1200kg trolley jack from Super-cheap Autos for just over $30.00.
I already had the wheels, but only one swivel one - that's why there is only one wheel on the front. It's still very stable though, and because the bottom rail is close to the ground, it can't really tip over very far.
The handle is a Lawn Mower handle cut and bent to shape, then welded together and the shaft for the handle is a piece of galvanized water pipe. The bearings that allow the cross braces to slide along (inside) the top and bottom rails are from lawn mower wheels - they fitted perfectly! The last photo shows the slots in the top rail and the bearing is right at the tip of the arrow. I welded pins into the cross brace and drilled a hole through them to take a spring clip - the tip of the yellow arrow points to the ring on the spring clip. The top of the brace that crosses that one is attached to the other end of the top rail, to give it stability. That one only swivels - it doesn't slide on a bearing. To allow the cross braces to swivel in the centre without binding on each other, I cut round discs from an ice-cream container and punched a hole in the centre and put it between the cross braces.
I'll take some more photos tomorrow to show more detail of how it was constructed.
Now, I need to pull it all to bits, wire-brush it all and give it a decent coat of paint.
Necessity really is the mother of invention
