Drilling


Three different drill bits

Three different drill bits

When I shattered a 7mm drill bit the other week, Dormer Pramet got in contact and offered me a replacement. I’ve been following them on twitter for a while and particularly like their machining tips and Monday quiz from which

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Titan Combi Drill

Titan Combi Drill

Those who follow on twitter will know that my cordless drill died mid-project. I believe the brushes wore out. As I was in the middle of building, I did not have the chance to strip it down and determine the

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Drills only used for 10 minutes

Drills only used for 10 minutes

Whilst listening to the Restart Project podcast I heard a comment that the average drill is only used for 10 minutes in it’s lifetime and hence was a prime candidate for a sharing economy approach to tools. Given that I

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Trailer Modification

Trailer Modification

“All children, except one, grow up. They soon know that they will grow up.”― J.M. Barrie, Peter Pan Likewise, all toys will eventually become too small or too childish for their owner. A few years ago, I purchased a wooden

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Clock shafts

Clock shafts

Like any normal clock, the topsy turvey clocks requires two concentric spindles. The original spindle sizes were 1.6mm and 3.3mm to fit the hands. The size needed for the gear wheels I purchased was 4mm. The lengths need to be

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Spotting Drills vs centre drills

Spotting Drills vs centre drills

In MEW 212 Chris Smith from Taunton chastises Harold Hall for using centre drills for starting a hole and recomends using a spotting drill or stub drill instead. This is something that I also do so I thought I’d investigate

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Drilling square holes

I’ll start by clarifying that I don’t actually have a need to make square holes at the moment but I am facinated by these techniques. The maker of the above video Jacques Maurel also wrote an article for Model Engineer

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Non-circular holes

Non-circular holes

Over the weekend, I tried to drill the half crescent shaped holes in the arms of my knurling tool. The original idea had to be to have an 8mm hole but when I held it up against the metal it

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