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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

drill

  1. E

    Is there a better way to make elliptic holes in a proto PCB?

    Hi, I have a personal project that needs a pot. The pot I have has mounting tabs that don't fit in the proto PCB holes. Moreover, to make the pins fit, I had to "join" 2 pair of PCB holes. I ground the PCB a bit with the Dremel engraving tool, then I drilled through the remaining material...
  2. jamesbulini

    How to draw a drill hole on the PCB board?The problem is weak. Please don't laugh.

    I am a rookie, just started to learn PCB drawing, using Altium Designer 13. I had a problem: I had to drill a hole in my board, just a physical hole, without electrical properties, not the kind of pad. At first, because I didn't understand, so. 1. I drew a circle on the schematic Drill Drawing...
  3. C

    Homemade Multi Drill

    Hi, I'm thinking of making a multi drill for wood drilling, that uses anywhere from 6 to 9 9V or 12V DC motors. These motors would be wired in parallel, with one battery source. I'd mount a drill chuck on each of the motors shafts for a drill bit. Now, I need a little bit of help from you. Do...
  4. R

    Old makita 18v lithium rechargeable drill too fast

    Old Makita drill to fast for some applications I need to be able to slow it down but also keep it on high speed to do two things at once but I can't afford the new one that does that already is there some way I can slow down without draining the battery down so I can still use it fast as well...
  5. S

    Why do electric motors burn out

    Hi all, Can anyone explain why some motors regularly burn out, I am thinking specifically about electric hand drills and to a lesser extent angle grinders. I know how they burn out- normally the insulating varnish on one of the coils breaks down and creates a short- I think that is right. If...
  6. S

    Small Drill Press

    A small drill press is essential if you are making printed circuit boards or custom tag-boards where fine twist drills of typically 0.8mm and 1 mm are used. A standard drill press is a bit bulky and typically does not have a sufficiently high speed or suitable chuck for small drills. And hand...

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