Giant 20' x 3' x 2' router build

[charlieuk]

started to draw things up the hole y and z bit is proper complex and proving a bit of a head spinner but slowly making progress. just ordered a few bits from kjn to replace the main beam on the z with 80 x 80 and a hole load more t nuts. (You can never under estimate just how many you will need!) The aluminium while expensive is really good if you are not 100% sure on what you are doing as its so easy to go back a step or two if you forget something.

I have all so ordered a number of triangular corner plates to go on the table to give it belt and braces as there is the tinniest bit of movement if you hang from the arm.

While this is a huge machine and a bit of a different design im not sure it that much different to anything else except the x axis is very long!

im allso working on idea for the x axis rack and pinion set up/gear box. I have done a very very crude mock up, i have been told that it is probably safer to go for a fixed pinion setup rather than spring loaded as it is a lot less likely to go wrong and it is very hard to get enough pressure with out a very big spring. I am going to try and work some way of making a manual tensioner to help press the pinion up into the rack before bolting it up tight.

I Started to read the what motor threads and got to admit im wondering if i will ever figure it out myself! im not a great one for maths.