Drilling bolts- how many holes?

[Petorius]

It just took me a good 10 minutes and 2 bits to get through my drain plug head once. Is there an advantage to drilling through all 6 faces of the bolt head or can I just do one and done?

[Larry]

Try marking the bolts in place and remove/ drill one at a time. Be sure to use cutting fluid or oil and clean chips out of the drill flutes often to prevent galling.

[carsick]

Are you drilling through the entire head or just two adjacent flats? Yes it's an ass ache, but no need to make it even more difficult.

[jasnmar]

Drill what is necessary to sufficiently secure the bolt. Sometimes that means "directly" through. Sometimes that means through 4 faces (which means 2 corners) if you are wiring something with a stud.

Generally if you have a head that you are securing a "straight" through works.

If you have specific questions post a pic. There are plenty of critics here.

[Petorius]

Are you drilling through the entire head or just two adjacent flats? Yes it's an ass ache, but no need to make it even more difficult.

I went straight through the whole bolt head. I think it will work. Probably should have just gone two adjacent faces.

[OreoGaborio]

Uhhh yeah... Don't go through the entire head, just drill at an angle and use a center punch if you need it to keep the bit from walking.

Torque the bolt, mark the side(s) you want to drill, remove & have at it.... and buy a ton of bits.

[brady]

I've dished the head of larger bolts with a large bit, then drilled straight in from the sides, ends up looking a little like the Probolts and saves a bunch of drilling with the small bits.

[breakdirt916]

I need to start doing this on my minis

can't you just do this?

[Kurlon]

That's what I've always done.

[OreoGaborio]

I need to start doing this on my minis

can't you just do this?

Yes
And the angle is why you need a center punch. Otherwise you're puting a lot of side load on the bits trying to keep them from walking sideways.

[caloots]

if u dont have a punch.. u can start a tiny hole straight.. just a lil bit and then turn it to an angle.

[CBR929RE]

if u dont have a punch.. u can start a tiny hole straight.. just a lil bit and then turn it to an angle.

exactly what I was going to suggest. center punch first cause it'll still want to walk then go in a little straight then go at the angle. works great.

and don't put too much pressure behind the drill. that's when bits break. I think the best bits I've found are Dewalt, I forget the metal. might have been titanium.

[Rada]

I am more of a fan of drilling all the way through.. It is a bit more work. Especially if you don't have a drill press and a vise.

Bits..... Go in a horses mouth..

Drills go in a drill chuck to cut metal.

Titanium is used to make light strong parts. (consumer advertising is stupid).
Titanium Nitride is used to coat a steel or carbide cutting tool to make the surface of the tool harder and more heat resistant...

The best drills for safety wire purposes are ones made from cobalt and with a 135° split point. Real cutting oil will make it go a lot better too. You need plenty of RPM for a 1/16" drill to cut well.

Side pressure is the enemy. So is break out on the far side. When you start breaking out you need to ease up on the pressure.



Sorry

[tropicoz]

Agreed on the cobalt. Little more expensive but much more durable.

[carsick]

The best drills for safety wire purposes are ones made from cobalt and with a 135° split point.
Sorry

Any sources for purchase of these pure cobalt drills for the non-machinists among us? Best I can find are alloys of 8% cobalt

[Rada]

135 degree drill on amazon..
Tits ahoy!!!

[jasnmar]

I can finds stuff...
http://www.dewalt.com/tool-parts/dri...ts-dw1204.aspx
http://www.ebay.com/itm/3-32-Cobalt-...-/120838932818
http://www.homedepot.com/p/DEWALT-3-...1206/202579607
http://www.amazon.com/Irwin-Tools-63...balt+drill+bit

[carsick]

Added to cart...

[Tas]

I've gotten my latest 135 degree bits at Fastenal.

[brady]

any good reason to use 1/16" instead of 5/64"?

[caloots]

ya, I have a set of dewalt.. i cant remember.. i think it is titanium.. they are gold.. they work excellent !!!

[Jim]

here's the solution: http://www.probolt-usa.com/stainless...race-spec.html

[MarkMarine]

here's the solution: http://www.probolt-usa.com/stainless...race-spec.html

Yeah if you want to piss money away. Fancy bolts should not be part of a racing budget.

[CBR929RE]

ya, I have a set of dewalt.. i cant remember.. i think it is titanium.. they are gold.. they work excellent !!!

those are the ones I use too.

Yeah if you want to piss money away. Fancy bolts should not be part of a racing budget.

they are if you want to feel like a MotoGP team.

[MarkMarine]

they are if you want to feel like a MotoGP team.

Right. And have motogp sized budget. 8$ per bolt, that is pure insanity.