hon30critter buy the regular bits in bulk and chuck them so there is little more of the drill bit protruding from the chuck than is needed to get through the thickness of the material. Dave
buy the regular bits in bulk and chuck them so there is little more of the drill bit protruding from the chuck than is needed to get through the thickness of the material.
Dave
maxman HOmainline" gregc the OP already has a set of #61 - #80 drills he's looking for a drill set for #1 - #60 that indicates the drill size in inches not metric. I see drill boxes without any sizes here's a listing a drills by # and size Greg, Ah, an attentive eye for accurate reading of the question! You drilled that answer right down the middle of the plate!! The #/in./mm chart is a big help too. I'm curious why the set would come with metric sizes. The #1 to #60 set I have has the drill number, and below that is listed the decimal size. I can't think of any reason for the set to be metric.
HOmainline"
gregc the OP already has a set of #61 - #80 drills he's looking for a drill set for #1 - #60 that indicates the drill size in inches not metric. I see drill boxes without any sizes here's a listing a drills by # and size Greg, Ah, an attentive eye for accurate reading of the question! You drilled that answer right down the middle of the plate!! The #/in./mm chart is a big help too.
the OP already has a set of #61 - #80 drills
he's looking for a drill set for #1 - #60 that indicates the drill size in inches not metric. I see drill boxes without any sizes
here's a listing a drills by # and size
I'm curious why the set would come with metric sizes. The #1 to #60 set I have has the drill number, and below that is listed the decimal size. I can't think of any reason for the set to be metric.
i'll guess that the size of each numbered drill is some percentage of the drill with the next smaller number.
when i use my numbered or lettered drill sets, i'm looking for a drill closest to the size i need. having the drill holders stamped with both the number/letter and decimal size saves me the time of measuring the drill.
if you're working in metric, you would probably prefer that the drill sizes were in mm.
greg - Philadelphia & Reading / Reading
gregc maxman HOmainline" gregc the OP already has a set of #61 - #80 drills he's looking for a drill set for #1 - #60 that indicates the drill size in inches not metric. I see drill boxes without any sizes here's a listing a drills by # and size Greg, Ah, an attentive eye for accurate reading of the question! You drilled that answer right down the middle of the plate!! The #/in./mm chart is a big help too. I'm curious why the set would come with metric sizes. The #1 to #60 set I have has the drill number, and below that is listed the decimal size. I can't think of any reason for the set to be metric. i'll guess that the size of each numbered drill is some percentage of the drill with the next smaller number.
Greg,
Actually, in reality - it's somewhat non-linear the rate the sizes increase or decrease between individually numbered drill bits - especially between #1 & #60: (Click to enlarge)
Tom
https://tstage9.wixsite.com/nyc-modeling
Time...It marches on...without ever turning around to see if anyone is even keeping in step.
Canalligators I have a 61-80 set and rarely use the bits in there. The ones I use most are .078, .0625, .055, .047 and .040. Occasionally the .035. I am also of the school of letting the adhesive fill the gap. Sorry, it just makes no sense to me to use drill "numbers". You measure the bit you want to install with a micrometer or caliper, in actual size, then choose the bit directly, without having to look it up in a chart. Better yet, do it all metric. I'll shut up now.
I have a 61-80 set and rarely use the bits in there. The ones I use most are .078, .0625, .055, .047 and .040. Occasionally the .035. I am also of the school of letting the adhesive fill the gap.
Sorry, it just makes no sense to me to use drill "numbers". You measure the bit you want to install with a micrometer or caliper, in actual size, then choose the bit directly, without having to look it up in a chart.
Better yet, do it all metric. I'll shut up now.
A good tip!
Kerry
HOmainline...Sorry, it just makes no sense to me to use drill "numbers". You measure the bit you want to install with a micrometer or caliper, in actual size, then choose the bit directly, without having to look it up in a chart...
I have a drill bit chart hanging on the wall in my shop. If I measure the part, then it's a simple matter to look at the chart, find the corresponding size and select the proper bit...
The chart covers numbered, lettered, and fractional sizes, along with drill sizes for tapping. I'm not generally a fan of adhesive for gap-filling when I can do the job properly, but there are occasions, not related to drill bits, where it's sometimes necessary.
Wayne
tstageActually, in reality - it's somewhat non-linear
It's not a percentage, if it were, it would be exponential (non-linear). It's inconsistent (especially around #30)
Yepper. That's why a drill size chart is so handy to have around.
hon30critter Those bits are designed to be used in commercial drill presses where there is no wobble or flexing. If you try to use those bits by hand, when you wobble a bit (which you will) the drill will likely break at the tip of the large shank.
.
I have been using these drills for more than ten years, and I will never go back.
I do break a few, but that is a fair trade off for never needing to change a collet and how securely the bits are held in place to the drilling handle.
These alse drill into brass, pewter, and tin better than any drill style I have ever used.
-Kevin
Living the dream.