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  • Cable Terminals - High Current - for Off Grid Solar Batteries

    I'd modify that like this:5a. Wrap the exposed cable's end in about 5-10cm of solder wire.5b. Feed it into the round half of the tube6a. Squash it gently with your mallet6b. Use butane torch or 100W soldering iron to melt the solder. Make sure you don't burn or melt remaining insulation on the cable. As solder melts, squash copper again to make sure cable is reliably held in place.This way you ensure that the connection will be reliable and won't heat under heavy load. Solder will prevent copper from corroding and increasing resistance on the joint.

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  • bougakov commented on josemivaz's instructable Laser Printed PCB's, Perfect and Easy.1 month ago
    Laser Printed PCB's, Perfect and Easy.

    Use $10 drill press from your local hardware store and a dremel: http://www.thingiverse.com/thing:1654673This allows perfect holes at 90-degree angle

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  • bougakov commented on Confounded Machine's instructable Concrete Metal Lathe7 months ago
    Concrete Metal Lathe

    Your build could have looked so much better if you have invested just about $2 in a cheap mixer for a hand drill (or, better, stronger mixer with SDS+ tip for power drill). It is almost impossible to mix concrete with a stick in large amounts - it is damn hard and takes too much labor. If you had used that, all surfaces would be so much smoother and concrete would be stronger.

    Your build could have looked so much better if you have invested just about $2 in a cheap mixer for a hand drill (or, better, stronger mixer with SDS+ tip for power drill). It is almost impossible to mix concrete with a stick in large amounts - it is damn hard and takes too much labor. If you had used that, all surfaces would be so much smoother and concrete would be stronger.

    Don't underestimate the weight of the concrete - it can break your styrofoam. Plywood is a smarter choice.

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