I decided I needed a new cone drill and saw some very common sets on ebay in either metric or imperial sizes. I bought a set and tested them on a plastic enclosure to drill a selection of holes for cable glands.
I have to say that for plastic they work very well and provide good clean holes. I've not tested them on wood or metal, since I'm more likely to keep these exclusively for drilling plastic cases.
I have to say that for plastic they work very well and provide good clean holes. I've not tested them on wood or metal, since I'm more likely to keep these exclusively for drilling plastic cases.
I have them they are very good I use them much more then I expected I thought it was kinda pricey for 3 pieces because in my country for 5$ you can buy about 200 drill bits but they are well for the price and after using them for a year I see why they are pricey because they are quite good
Yes, I have set of 3 drills for even holes diameter 2mm – 32mm and one bit for 1mm step up from 3mm to 12mm and they are really good for plastic and mild hard aluminium too. I didn't dare to use it on hardened steel, still use "standard drill bits" for that.
Have an nice day mate 🙂
BTW. How do You do Yours square or rectangular holes in plastic cases ?
I know everyone has their own methods of doing them, but I am still interested in "how can improve" in cutting / drilling square holes in plastic cases.
Do they make them much bigger, like 35-40mm? By the way, not all plastic is soft, some is really hard.
Great. Also work in aluminum (with oil, i use any & used) and wood. Great to make deep cone shaped holes for locating alignment pins. Steel wears them out, fast. I do sharpen them, but still replace them every year.
I've used these up to 5mm mild steel on my boat and they have worked quite well with a bit of effort… I've had to regrind the cutting edge once in 3 years edit I also dont raw cut everything is done with suds or a well graded cutting grease
I use them in steel all the time, huge time savers. Incidentally, harbor freight sells the best for the money. Every now and then they get something right.
they work great even on light sheet metal and aluminium
They work on steel too. Great if you keep snapping 2mm drills
you could probably use them on thin sheet metal, but not much more, and they'd probably get dull quite quickly.
They are exelent for even mild steel, like sheetmetal.
These cheap cutters work on aluminum and brass, though brass can get a bit yanky. I think stainless steel might be expecting a bit much.
Só fura plástico que mais que fura