Re. Bandsaw repair DW 3501;
Hi guys, thank you all for your responses. It was a real pain to get apart due to top tension screw seizing, and boy was it seized. I hacksawed off the central shaft, which was only 6mm thick. Made a complete new assembly using lathe (what a machine!!), mill, drill. Only part I need to buy was a flat bearing at 8mm instead of 6mm. Of course no-one had a bearing of this type so had to buy a 10mm and sleeve it. The 6mm shaft was stripped over a distance of 10mm.
No wonder I had to turn it about a hundred times before I realized it must be stripped. Duh!
Chuffed to have the saw back in operation in less than 24 hours.