Rock River Tool Taper Length Drill Question

D

ddickey

H-M Supporter - Gold Member
H-M Supporter Gold Member
Carbide tipped most of these look new or had regrinds as there is protective wax on them. Model 2630. I bought these at an auction. The site says to use an ASA split sleeve drill driver. From what I understand they are like a tapered sleeve. I have an MT3 TS so I would buy an MT3 driver, correct? I would have to buy a driver for every size drill, is that correct? These are super expensive, the 63/64" goes for over $90 new!
https://www.rockrivertool.com/cutting-tools/drills/taper-length/118-point/2630F/
 
Taper length not taper shank as mentioned above.
There are 3 common twist drill lengths sold as consumer goods, screw machine length, jobber length and taper length.
Aircraft length drills often have a very long shank and short flute length. Long drills are simply long and seem to have no generic name.
 
So there is really no reason why I'd need a drill driver other than to use in a MT TS?
 
ddickey said:
So there is really no reason why I'd need a drill driver other than to use in a MT TS?
Click to expand...
Exactly
You may hold them in a drill chuck.
Simple 3 jaw drill chucks such as Jacobs will not hold a drill very well, it is unlikely that you will ever push a tool that hard in a home shop so do not worry about it, chuck them up and have at it.
Do not baby them however, throw caution to the wind as this is what a $90.00 drill is for.
 
They're mosting larger sizes 1" being the largest going down in 1/64" increments. So will need to use an er40 collet. I think I got 20 of them with a nice Huot indexer for $20. I'll take a pick when I get home from work.
 
They're good for deck work ! ;) If you really want to get fancy , I have those long things with coolant passages going thru the length of the drill . Never figured out just how they got that spiral hole all the way thru that drill . :dunno:
 
Drill one hole straight until close to the end then one hole from each cutting edge at an angle.

Drill 2 straight holes through the material then twist it, rough machine, harden then finish grind.

I do not know this as fact but imagine that solid carbide through coolant tools are made with sacrificial cores during the sintering process, the cores are melted out afterwards or during sintering leaving a hole
 
You must log in or register to reply here.
Back
Top