broken .062 drill bit removal?

[hawkeye2]

I suspect the hole saws will walk on you specially since you can't use the pilot bitt with the saw.

 

[deerstalkert]

you the man Rich44! will pm my address. anything you need Bp wise or any other wise?

 

[deerstalkert]

thanks Hawkeye.

 

[deerstalkert]

Are you near a medium/major city with manufacturing? You might try looking for a fabrication shop with a laser cutting system. You'd be amazed at how many thousands of laser cutting/drilling systems are scattered all over the country. A careful alignment and a few quick pops with a 3+ kilowatt laser will precisely vaporize the drill bit without damaging anything else. I bet most fabrication shop owners are hunters themselves and will get kick out of helping you out. It's a non typical way to solve your problem but lasers have been used to drill very precise holes for decades now. Quick and clean.

i am not close to anything! i really do live 30 miles one way from the nearest town.

 

[Nameless Hunter]

i am not close to anything! i really do live 30 miles one way from the nearest town.

I'm feeling a little bit envious!

 

[Ponderosaman]

Use a smaller harder bit low and slow with lube to drill the drill bit. Make sure you hit dead center so it doesn't walk, so don't press too hard. Goal is to get a second drill bit broken off in the first.

 

[Rich44]

Took both a 1/16 and 1/8 carbide ball end mill and relived the one end to get the needed cutting depth. That shows on left side, right side is original configuration. Will be sent out tomorrow.
Start with the right side first and get it established and after drilling that depth flip the cutter over. Make sure to use the stop and use high rpm. You can do it.

.

 

[deerstalkert]

press is set at 3k rpm now. is that high enough? can go to 12k
Rich44 who supplies these bits? be nice to have a few . that way nothing would ever break that needed them!

 

[Rich44]

So sounds like you will be in a drill press. Unless it is a high quality one would stay with 3,000 rpm. Some machines going real fast rpm will set up a balance problem and that is not needed. The 1/16 ball end mill could be run faster but what is more important that you take the set up time of lining up your previous hole good and clamping to the table. I trust you have a quill stop and that is a must. Tool Makers call it as Bumping the Stop. Only way to have success. If you have about a 1/4 inch 25 bumps at .010 is all that is needed. These are new mills and should cut very nicely. While the 1/16 looks a little scary, I would go with that with a good set up. Gives you the hole size that you wanted to have. Use the regular end first to start you cuts and then flip ends and get a soft touch and do the rest. Will mail in the morning. Let us know how you make out.

 

[deerstalkert]

thank you Rich44.
let me know if you need anything.

 

[GREENSWLDE]

A long time ago we had an electric EDF set that would just eat small screws and taps.Can't remember how much it cost but was bought S/H for pea nuts. If you have one you may be able to help others in future..OLD DOG..

 

[poker]

A technical college close to home here would use an edm to remove broken taps for people. That was back when technical colleges existed. They dont now, but surely there are some edm’s around in industrial settings.

 

[deerstalkert]

Hopefully the bits Rich44 is sending will do the trick. once the broken bit is out of the way i will install a vent liner. i hope.

 

[deerstalkert]

Rich44, i do not have a quill stop on this machine but can make one that will suffice. After all i was trained to improvise, adapt, and overcome in a previous life! if not , off to the machine shop down the mountain.

 

[Rich44]

End mills are expected to be delivered Fri. the 4th.

Quill Stop - Could tell you did not use quill stop as the .062 drill was broken. 99% of small drills broken are by hand feeding by feel without a stop. So knowing it was not used was easy, but not knowing the machine does not have one is a surprise. Would like you very much to have success in removing the small drill which is about 1/4 inch long. As a post saying " Broken .062 Drill Bit with Broken Carbide Ball Mill Removal" is not the help you need.

Would feel very confident using 1/16 mill with the following set up.

The End mill can be chucked up and run perfectly true.

The machine runs smooth at the 3,000 rpm with no radial slop in head.

The setup is true and solid. Many times a 5 minute job can take an hour to set up. Which is why in 5 minutes it is done.

And most important a solid stop, that can be relied on. Since you have suggested on improvising one it needs to be a solid quill stop that can be relied on doing the job. If you were to use a 3/8 fine thread bolt for adjustment in a solid fixture that would be good. As 24 threads per inch turning a head flat at a time will advance .007 inch at a time. Remember the .062 drill that you will be removing is 2 flutes with all kinds of grab spots and will be requiring you to sneak up on a touch. After that you need not worry about feel, the stop is all that is needed. Have done this many times for people as a 35 year retired tool maker and yes after setup it is a 5 minute easy job. If you follow the above you should have 99% success and yes I am on your side. If you can not adhere to the above than stop. Go down the mountain where a proper machine can be had and used. Since you do seem to have knowledge of your previous life, please check to see if you are a person that often makes the same mistake twice. And if it breaks and cannot be pick out, it's not the end of the world just look up EDM Small Hole Drilling on the internet.

 

[deerstalkert]

previous life was just an iteration of the current one. just a step in the road so to speak.
if it takes me a full day to set up, i have that day.
I have seldom made the same mistake twice, but when i have i paid dearly enough to learn my lesson.
i can't thank you enough Rich44 for your interest and action in helping a old fart out.
if you need anything at all, especially in any firearm field let me know. i have 60 years of accumulated gun STUFF. all types.
best regards DeerstalkerT. (the name my mother gave me)

 

[Rich44]

And by the way the mailing started out as a standard envelope, and then the wife said that will never get there. So I let here package in a padded envelope, and when she took it in the post office they put it in a flat rate envelope. So it might take you 5 minutes to find them. But as said before, you can do it.

 

[Grenadier1758]

The tip of your drill bit is just below that protrusion you see in the barrel. You may want to remove your Dremel tool from its secret location and use a small grinding burr to touch that protrusion to cut away the burrs. Then the drill bit can be driven through the hole. You are going to want a little bit of internal cone to bring powder closer to the pan anyway.

 

[Flintandsteel]

Sounds like a lot of work. Why can’t you just use a 1/16” punch and just drive it through? Can’t be much holding it, and barrel steel is pretty soft.
Maybe I missed something?

 

[Dude]

Somewhere several posts back, he discovered the drill bit had not broken through. Now we're waiting for the bits in the mail from Rich44. Be patient, guys. As dad said "hold your horses".