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I am assembling the sub frame (6x2) for garden decking. I see you can now buy screws that do not require a 'pilot' hole. In my day the timber being fixed required a clearance hole, whilst the timber being fixed to, required (but not always) a pilot hole.Can these screws be used without the need...

I have a robotics project requiring a 12v high torque motor of max. 12rpm. I have an electric window motor but it,s too fast. Would a Sunroof motor be slower or can anyone suggest an alternative. Thanks. Roy

(slight correction to question. "I have" should read "I propose to have".) Thanks guys for all the advise. Seems I need to go back to the drawing board. so in more detail: I have a 12inch dia. turntable on which sits a load of 7Kg. It,s required to turn (and reverse) through 180 degrees i.e...

The turf would have been the cheapest available. It would have comprised a mixture of grasses inappropiate for the location. If you have trees surrounding the lawn then it is likely there is excessive shade. You will also have drip from the perimeter of the trees(deadly for lawns). Finally...

I have a small mains motor (the type used in a microwave) with a speed of 12rpm. This is slightly too fast for my robotics application-6 to 8 rpm would be better. How do I achieve this?

Thanks to everyone-borrowed a mulimeter-the black and white wire was positive and the appliance is working fine. Thanks again. ROY

I have a standard mains adaptor switchable from 3 to 12v. One wire is black and the other is black with a white stripe. Which of these is +ve ?

I have an electric window motor and mechanism off a car. I also have the switch and a 12v power supply but no wiring or any clue how to connect them up. The set is required to lift/lower a lightweight platform not for use on a car. The only connections on the motor are two prongs within a...