This instructable will show you how to make a 30tonne hydraulic press. In my press i use some serious hardware, and the final press is going to end up weighing 86kg, which is 164lbs or 13.5 stone. I use M42 threaded rod which is 42mm wide and weighs a tonne. There is nothing to stop you using smaller hardware, I am told that M30 rod (which you can buy from RS for 10 quid will take 26 tonnes, so two of those would handle it fine.
However you build it, its a nice project, and the finished product is great fun to use.
Below are some damage photos. Theres also a video i made of a santa candle being crushed. I sped the video up so its not too long, the press does not operate at this speed...
Step 1: Gather materials....
This is a relativly simple project, once you have the bits and peices its very straight foward to put it all together.
You need two upright supports. If you cant get rod as hefty as the stuff I managed to find, you could use four thinner threaded rods instead. You could also use smaller box section.
Anyway, if you want to build one just like mine, you need the following:
6ft of 150mm box section. I got mine from a local steel fabrication place for 50quid. It needs to be cut into three 2ft sections. You can either do this with a big angle grinder, hack saw or an oxy acentaline torch. I did mine the lazy way and i got the steel works to cut it for me.
Two 1m lengths of M42 (or similar sized) threaded rod. I got mine off a friend, the two meter peices with all the nuts and washers for £20.
8 M42 Nuts I got mine with the M42 rod.
12 M42 washers 16 washers would be ideal, but for non-load bearing points, you dont need a nut. My freind with the M42 rod only had 12 washers.
Some suitably sized steel bar - for use as feet, if a machine this heavy fell over it would break through the floor.
An appropriatly sized square steel plate - This is optional but is necessary if your box section is significantly smaller than the base of the jack.
30 Tonne bottle jack - This is obviously the component where all the power comes from. You dont have to use a 30t jack, you can use a 50 or a 15t if you want, you can use an air powered one too if you ahve a compressor, The jacks are compleatly inter-changable. Just make sure your steel can handle the load.
Now, the tools....