Two Big Beasts

A couple of weeks ago I had a message from my son – could he have the use of a space 3m x 3m in my workshop? He had put a shipping container on the garden of a house he owns and rents out in the same road as his home with the intention of using it as a workshop. But the a neighbour complained to the Council who told him it was ‘not in keeping’ and must be removed. That left him with all his tools stored in a small shed in his own smaller garden (which already houses his office) but nowhere to use them. Of course I said ‘Yes’ and by rearranging my stuff created the space he needed.

So a flurry of parcels and packages arrived and he sent me a list of materials he wanted me to order from the local Builders’ Merchant. Then they were followed, last Monday, by the man himself plus his cat. Not your average moggy, not even a pedigree cat. This is an F3 Savannah Cat, at least twice the size of my more humble ones. But a lovely softie who acts more like a dog in many ways and obviously thought that my garden was Heaven! He did give my dogs and cats a bit of a shock though – not quite sure what sort of big beast had entered their domain!

Odin explores this new territory

My son is a software developer but, like his father, my father and my paternal grandfather, loves making things in wood. It transpired that the workshop space was needed to build a computer controlled wood cutting machine thus combining his two passions. He has a small one at home which can cut things about the size of an A4 sheet of paper but having seen its potential he wanted one which could do handle anything up to a full sheet of plywood – 2.4m x 1.2m! Hence the large area of floor space required.

With intermittent help from me to ‘hold the other end of’ and a couple of trips out to get things he hadn’t realised he would need, he built the worktop the sheet of wood will sit on. It is 2 layers of heavy ply with framing and 2 sheets of insulation between them to stop it flexing.

The cutting head has to move in 3 dimensions – up and down the bed, from side to side and deeper or shallower, so he also needed a gantry which travels along the sides of the bed (the x axis)) with another piece which moves side to side (y axis) and can also raise or lower the cutter (z axis). The gantry and other wooden parts run on small wheels on tracks and are pulled into position by motors which have thin rubber tracks around a cog wheel – think caterpillar tracks. The motors are controlled by the computer.

This bit travels from side to side on the gantry and the top part raises or lowers the head

By Friday evening the thing was built and he had wired up 2 of the 4 motors but ran out of time (he had to drive home early on Saturday morning) to connect the other 2 let alone test it all and make something. He will come back as soon as he is able to finish it and then we can start playing with it! As you can see it is pretty massive – definitely a big beast!

Now all I have to do is tidy up the rest of the workshop!

My reward is that I will be seeing my son more frequently and can ask him to programme the machine to cut wood out for me and drill the holes where they should go – a sort of ‘made to measure’ IKEA in my garden 😉