How do you manage your hot drill bits?

Francis Hadenwrote:

Yeah the bits go purple when drilling hard rock! 

I carry a magnet pen in one of my petzl tool bags to easily fish the broken head out.

The Hilti cross head bits are intended for drilling into reinforced concrete with lower in-hole cutting temperatures versus natural stone, which is why they tend to overheat versus a traditional 2 blade bit. Contacting rebar with a blade style bit causes it to jam instantly but the drill keeps turning and so to the driller. Net result can be broken wrists hence a 4 cutting head which won't jam.

How well does the Petzl Bolt Bag resist hot bits given the material is TPU? 

Interesting about the cross heads overheating. So what bit have you found to be the most resilient in hard rock?

As for the bolt bag, I've occasionally noticed some minor damage when I've closed the flap over a hot bit. The TPU is reinforced and it hold bits/hangs well enough to leave it open for cooling. 

jonathan knightwrote:

Interesting about the cross heads overheating. So what bit have you found to be the most resilient in hard rock?

As for the bolt bag, I've occasionally noticed some minor damage when I've closed the flap over a hot bit. The TPU is reinforced and it hold bits/hangs well enough to leave it open for cooling. 

Standard Bosch bits seem to be decent enough although we tend to get all sorts in Asia. 

I use the Hilti cross heads because I'm typically drilling hard rock and they reduce the drilling time while making notching easy if required. Essential for using Petzl Pulse removable anchors too which are in the kit sometimes. The red collar mark is a useful reference point.

Thanks, I'd always wondered how the material would hold up   

If you are going to use water make sure the glue is compatible and if using mechanical bolts don't use water at all. The rock won't be as porous as concrete so any water you put into the whole will stay there forever a.k.a rust the bolt and make it dangerous.

RJ Bwrote:

If you are going to use water make sure the glue is compatible and if using mechanical bolts don't use water at all. The rock won't be as porous as concrete so any water you put into the whole will stay there forever a.k.a rust the bolt and make it dangerous.

I don't like you. You have the same initials as me.

Kidding aside, I'll make sure the epoxy is safe and I can't use mechanical bolts where I live. I'm bolting on the ocean. 

RJ Bwrote:

If you are going to use water make sure the glue is compatible and if using mechanical bolts don't use water at all. The rock won't be as porous as concrete so any water you put into the whole will stay there forever a.k.a rust the bolt and make it dangerous.

I don’t have evidence that disproves this but from my personal experience I don’t know if this is quite true for wedge/sleeve bolts. Some bolts like the 5 piece powers bolt the space between the sleeve and bolt is such that water could easily pool year round. This would happen naturally during freeze thaw, rain or condensation given how wet climbs in seattle that have no direct path to water can get wet, I assume every bolt is damp here in the winter. Secondly even if the drill it is dripping in water as soon as you start drilling it will evaporate immediately. If this doesn’t happen all the dust would turn to mud. Third any bolt that isn’t sealed tightly(hiliti tend to have spinners) these bolts would be rusting out way faster. However, If the hole is wet it could be a nightmare to install a wedge bolt since tightening the bolt between water and mud could be bad. I would not be worried about a wet rag making a hole wet and would only be concerned if the bolt placement is somewhere that is currently waterfall or wet 9 months a year.

RJ Bwrote:

If you are going to use water make sure the glue is compatible and if using mechanical bolts don't use water at all. The rock won't be as porous as concrete so any water you put into the whole will stay there forever a.k.a rust the bolt and make it dangerous.

Water will not stay there forever.   Likely won’t even last a day or two during dry weather.

RJ Bwrote:

The rock won't be as porous as concrete so any water you put into the whole will stay there forever a.k.a rust the bolt and make it dangerous.

Wholey sheep shit, that is preposterous!!! But a sloppy hole when hammer drilling is bad form, I will agree. If you’re making mud out of rock dust in the process then it will stick to the walls of the hole and your tool. Unless you hauled up some serious compressed air you will not be able to get all the mud out. So keep the water out of the rock and only use it directly on your bit, and I should have said before in my last post, its good to have a small rag or something to wipe the excess water off your bit after quenching. Keeping everything dry (but cooler) while power drilling will make things work way smoother. 

jonathan knightwrote:

Interesting about the cross heads overheating. So what bit have you found to be the most resilient in hard rock?

As for the bolt bag, I've occasionally noticed some minor damage when I've closed the flap over a hot bit. The TPU is reinforced and it hold bits/hangs well enough to leave it open for cooling. 

jonathan knightwrote: So what bit have you found to be the most resilient in hard rock?

Bosch Bulldog Extreme, it's the only bit I know of that has a solid carbide tip.

Ryan Bondwrote:

You're getting 20 minutes? I....need to stop gluing in summer. 

and the hole depth is about 4 inches.

Ryan, tried to answer yesterday but got this:

John Byrneswrote:

Ryan, tried to answer yesterday but got this:

Red cards flashing up everywhere!

And this one too.

Francis Hadenwrote:

Red cards flashing up everywhere!

Yup.  I've complained to Nick several times previously, and again yesterday/today, but he won't change it.   

He doesn't care about the people who use the Forums to exchange information, he just doesn't want to have to moderate "flagged" posts.

John Byrneswrote:

Ryan, tried to answer yesterday but got this:

Bro, I knew it was good for longer than the guy who was showing me said. Thanks for the confirmation 

CTBwrote:

Wholey sheep shit, that is preposterous!!! But a sloppy hole when hammer drilling is bad form, I will agree. If you’re making mud out of rock dust in the process then it will stick to the walls of the hole and your tool. Unless you hauled up some serious compressed air you will not be able to get all the mud out. So keep the water out of the rock and only use it directly on your bit, and I should have said before in my last post, its good to have a small rag or something to wipe the excess water off your bit after quenching. Keeping everything dry (but cooler) while power drilling will make things work way smoother. 

Remember this is an open forum where people voice their opinions, personal experience, and learning. This can come from different angles or from different areas of expertise. 

The way I was told and taught bolting was to never add additional water besides what would happen naturally because it would lead to future issues including accelerating the rusting of bolts. 

I am not mad at the way you responded but I suggest reflecting on the initial dismissive language used, "Wholey sheep shit" and realizing not everyone knows exactly what you do. Also, this is an example of a type of micro-aggression that could have a lasting impact on a person. Though this wouldn't apply to me if you have another conversation and initially start with a strong dismissive tone try to begin with a more constructive criticism like tone such that of Trevor. 

RJ Bwrote:

Remember this is an open forum where people voice their opinions, personal experience, and learning. This can come from different angles or from different areas of expertise. 

The way I was told and taught bolting was to never add additional water besides what would happen naturally because it would lead to future issues including accelerating the rusting of bolts. 

I am not mad at the way you responded but I suggest reflecting on the initial dismissive language used, "Wholey sheep shit" and realizing not everyone knows exactly what you do. Also, this is an example of a type of micro-aggression that could have a lasting impact on a person. Though this wouldn't apply to me if you have another conversation and initially start with a strong dismissive tone try to begin with a more constructive criticism like tone such that of Trevor. 

This^. If every forum member talked to people with dignity, conversations would be more productive. 

To CTB: you undermine what you are saying by coming off as hostile. 

Lord do I miss Supertopo. 

Kevin Mokracekwrote:

Lord do I miss Supertopo. 

Have you checked out widefetish.com?

Andrew Krajnikwrote:

Have you checked out widefetish.com?

Yes, it’s ok but just not the same but still pretty good. 

Kevin Mokracekwrote:

Water will not stay there forever.   Likely won’t even last a day or two during dry weather.

I agree.  It won't even survive being in contact with a hot bit.    And as far as "rusting the bolt"... that's nonsense.