Model Boat Mayhem
Technical, Techniques, Hints, and Tips => Modelling tools => Topic started by: ukmike on November 06, 2020, 03:33:11 pm
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Amazon, "Twist Drills" last page. Very sharp,unusually.
Mike.
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I have the remains of one of those sets, very useful
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I bought one of these a few years back I think on e-bay amazing value cant see me ever having to buy a small twist drill again.
Regards Howard.
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Yes I have one too but mines in a red plastic base, very useful for small work
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Thought that I had found a hidden gem, but it seems lots of you already have them.
I already have a few of the smaller sizes of the Chinese gold coloured ones but they are far better than those, in particular the accuracy of the sizing.
They are within a few microns of the listed sizes, which is very rare for relatively low cost drills, a trait normally found in expensive Dormer and the like.
Try this one then, but I suspect many of you guys already know it.
Mike.
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got 2 of those- the lidl version
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I bought this set of drills in the case and when tried to use some found that all the drill ends were cut square and blunt ie not tapered to a point therefore making them unusable and a waste of money . Anybody else had the same experience ?
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I have to concur with John on this. My experience with these drill sets is that the quality isn't great. They
do work but only in non resistant materials. I broke one getting it off the sellotape that was holding the bundle of drills together
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Hi Umike, I have a very similar set of drills right down to a size where they are bundled together so they do not get lost. I bought mine for £10 at one of the Model engineer exhibitions at Allexander Palace. I did not realise how important the clear plastic cover was in keeping the drills together and in place so some of mine are a bit mixed up, but excellent drills.
regards
Roy
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Hi, the only time I use the very small drills 0.5mm is through a jig already drilled to fit. I was drilling 1mm brass tubing (as stanchions) and the 0.5 drill for feeding the handrails through. Never lost a drill.
Roy
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I bought this set of drills in the case and when tried to use some found that all the drill ends were cut square and blunt ie not tapered to a point therefore making them unusable and a waste of money . Anybody else had the same experience ?
I find that a lot with cheap small diameter drills - anything up to about 1.5mm is hit or miss about the centring of the cutting point and the symmetry of the ground angles - almost like their smallest collet is 2mm so they hold them by hand on the grinder. %)
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The amazon description says they are for wood and plastic, not suitable for drilling hard materials.
Unless this is a different item?
https://www.amazon.co.uk/HPMAISON-0-4mm-3-2mm-Drilling-Helicoidal-Plastic/dp/B08HN2HHY9/ref=sr_1_12?crid=28DZ6XTQSLFCJ&dchild=1&keywords=twist+drills+sets&qid=1610795621&sprefix=twist+dr%2Caps%2C157&sr=8-12
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for metal cutting I buy the carbide pcb drills, they break very easily, but are the only thing I have found to drill very small (0.7mm) holes through stainless steel
https://www.amazon.co.uk/Useful-Print-Circuit-Board-Carbide/dp/B00K74HUSO
but be warned, they break if you look at them too hard, expecially the smaller sizes, i usually break them putting the drill down, not a drill bit to use if you dont have very steady hands
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For sub 1mm sizes, guitar strings are useful. Available in several sizes a single string will keep you in short lengths for months.
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Hi I had not thought of guitar strings. The drills in my set go down to 0.1mm just don't drop one! A friend told me that if you file a part taper onto the last 4 or 5 mm of a length of piano wire you can use that as a drill. I have tried it and it works well.
Regards
Roy