Drill Holders

[daniel banquo merrick]

You guys need to get a real rock.

How did the ICS drill work?

John still hasn't said what brand drill he got from McMaster.

[John]

That rock fell off of the decorative wall on the outside of my building! It is my testing rock and I think it is limestone, but I don't know for sure. Don't tell the landlord.

We had every type of hand drill on the planet represented last night, even Warren Hardings personal Rawl drill.

[YETI]

A like the 1/4" I used last night, 1.75" DD made it a nice compact unit.

I buzzed it out later on the grinder, so it should be carving on the next route.

Pretty happy with your drill so far Dan, and am looking forward to putting both options 3/8-1/4" to use.

Set munge up with a UBER light backcountry drill kit and Titanium pins.  Pretty much the lightest set up out there.

That Harding->Bosque->Yeti->Munge drill has a mean slugging record, dating from the mid 70's.  It is 2.75" long!

[susan]

Dan, McMaster-Carr replied that they do not have the brand information for the drill bit. Though they did offer to credit the bit and send a replacement without asking for anything in return. 

[susan]

Dan, But John pointed out that we have the packaging for the bit. It's B & A Mfg. out of Riviera Beach, FL.

[mungeclimber]

That Harding->Bosque->Yeti->Munge drill has a mean slugging record, dating from the mid 70's.  It is 2.75" long!

Stoked to use on it something backcountry and big! (or not bolt at all if we don't need to)

light is right

[daniel banquo merrick]

I am bending 1/4" Relton bits and John is bending 1/4" B&A bits. So, we'll have to see how the ICS bits work. If they don't, we may need to start buying Chinese ones. It might be that 1/4" is just too small for carbide insert bits that get hit as hard as we hit them. It may be impossible to keep the temper hard enough when brazing the insert in.

I contacted Relton and B&A about making a run of short 3/8" SDS bits. Neither managed to provide me with a price although B&A offered to cut down a single bit and braze in a new tip for $68. I actually had to convince the Relton guy that the bits I wanted weren't in their catalog.

10 Chinese manufacturers gave me prices for short 3/8" bits in one day. $0.35 to $0.70 each (depending on "quality") will get you any length you want but you have to buy 500 and the shipping is high. Still, a dollar each will get you whatever you want. The main risk is forking out $500 for a bunch of bits that might be junk.

[YETI]

I can do the logistix

[daniel banquo merrick]

I just can't quit about the drills and drill holders.

ANSI standard for 10mm drills is 10.2 to 10.45 mm (0.402" to0.411"). ANSI standard for 3/8" is 0.390" to 0.398" which is very close. 10mm drills are available in 110mm (4.33") length. Drilling depth is about 2.25". Perfect for my holders. If you want a spec 3/8" drill, just grind down the sides a few thousandths.

[daniel banquo merrick]

Also, off topic, trip report from last weekend here;
http://www.supertopo.com/tr/Return-to-Watchtower-Peak-FA-Northeast-Ridge/t12108n.html

[John]

Nice job and great TR. Some of those shots in the smoke are eerie.

I remember that older trip report too.

I haven't forgotten I need to get you one of my drills but I am doing a short run of the bits when I get spare time in the shop which has been rare and the machine setups keep me from getting you one early. Soon though.

[NateD]

Thanks for the link to the TR Dan, and those are some otherworldly shots with the smoke.

Way to get out there!

[susan]

I really enjoyed your TR and photos! This is inspiring, and though I don't like reading the part about the fall climbing over worsening rock.... I'm really glad you include it and of course were just fine... It's nice to see you made it up another way for sure. Way to go!   

Also, I may not "get" everything about the drills.... but all your posts on this are really great. 

[daniel banquo merrick]

Susan - watch the mail.

[susan]

USPS or email?