this is my slider builded mostly by spare materials of my workshop.
tolal lenght: 1200mm, running lenght 1070mm, weight: heavy!
you need :
FOR THE RAIL
2 aluminioum pipes (desired lenght) 17 mm diam. (mine are 120cm)
1 aluminioum square tube (same lenght as above)
2 pieces of plywood 20cm x 15cm 1cm thick
8 woodscrews 3cm long
2 tripod adapters
2 1/4in bolts with nuts
FOR THE CART
2 pieces of plywood 15cm x 10cm 0,5 cm thick
3 threated rods 17cm long
6 wheels with bearings
12 nuts and several washers
1 wooden block about 14cm x 7cm x10cm
4 wood screws 4cm long
1 3/4 bolt long enought to connect your tripod head