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I'm in UK and have to remove two Uni-Screws holding a safe to the floor , but I don't have a driver bit. Despite trying every thing I can think of I've been unable to locate one. If I had the correct dimensions I'm sure I could make one. Can anybody give the official dimensions please? Or maybe...

The project I'm working on requires a 1:22 worm & wheel to transmit a little more than 60Nm torque at about 4RPM. From what I've read, it seems that I need Mod2 or 12.7DP gearing to fit into the space available. Because the price of commercial items exceed my budget I've decided to make my own...

My lathe is a well used Chinese 12x36 geared head that I purchased from Chester in UK some 10 years ago, and a year or so ago I decided to fit a 2-axis DRO. I met the same problem as everybody has who's done this; where to place the scales? The bed scale was relatively easy; it went at the...

I sometimes have to saw odd shapes out of sheet metal, maybe 3mm thick - certainly too thick for manual shears or snips. I first draw the pattern on paper (actually I do it in TurboCAD and print it full size) and then paste it to the metal using PrittStick or equivalent. The problem comes to...

Here's an old tip for drilling cross holes accurately, without a jig. Mount the work-piece in the vice as usual, put a pointed rod in the drill chuck (a small centre drill will do, but is slightly less accurate), and balance a thin strip of metal on the work-piece; a steel rule is perfect...