Here are some pointers on how to make a drill gauge.
- Get a piece of Aluminium (width- 25, thickness-3, length- 110; Aluminium is best for not rusting).
- Draw file and use an emery cloth to clean it up.
- Put engineers blue on one side of the aluminium piece.
-Use your ruler to measure 10cm from the top of your aluminium piece, then measure 20cm, 30cm, 40cm, 50cm & 60cm from the top. There should be six 10cm marked evenly from the line.
-Get an engineers square and a scribe, use the scribe on the lines width wise, you should get 10cm rectangles evenly distanced.
- From the last line mark 15cm in the middle and from that 15cm mark another, the last rectangle should be 20cm length worthy and 10cm wide.
- Use the engineer square to mark off the last two lines then scribe a line going vertically straight through the middle.
- Then center punch where each line meets, there should be 8 center punched marks.
- Find your drill bits (the correct sizes preferably), you can either start drilling the holes from where you marked or you can use a spotting drill bit first just to make sure you'll be drilling in the right place.
- Get a hand countersink and do small twists on the end of the holes to remove any burrs the machine left.
- Use the emery cloth again to clean up any new marks made. Then get your number punches (the right numbers for your sizes), and then punch the correct size number below your holes.
- Use your polishing and buffering machine to buffer and polish your drill gauge (make sure to do all the edges and sides).
- You now have a choice to spray paint it or add colour to it somehow but make sure to clean the insides of the holes, so the paint doesn't block it up. (Also make sure not to add thick layers of paint).
- You should now have your own drill gauge coloured or not.
- Use the engineer square to mark off the last two lines then scribe a line going vertically straight through the middle.
- Then center punch where each line meets, there should be 8 center punched marks.
- Find your drill bits (the correct sizes preferably), you can either start drilling the holes from where you marked or you can use a spotting drill bit first just to make sure you'll be drilling in the right place.
- Get a hand countersink and do small twists on the end of the holes to remove any burrs the machine left.
- Use the emery cloth again to clean up any new marks made. Then get your number punches (the right numbers for your sizes), and then punch the correct size number below your holes.
- Use your polishing and buffering machine to buffer and polish your drill gauge (make sure to do all the edges and sides).
- You now have a choice to spray paint it or add colour to it somehow but make sure to clean the insides of the holes, so the paint doesn't block it up. (Also make sure not to add thick layers of paint).
- You should now have your own drill gauge coloured or not.
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