CNCC resin anchor scheme (split from "Car Pot anchors" topic)
- Thread starter Simon Wilson
- Start date
MarkS
Moderator
Fixe also make a 316 stainless resin anchor:
http://www.fixehardware.com/shop/glue-in-bolts/fixe-ss-10mm-x-8cm-marine-glue-in-bolt/
http://www.fixehardware.com/shop/glue-in-bolts/fixe-ss-10mm-x-8cm-marine-glue-in-bolt/
Madness
New member
Not suitable for every anchor location (direction of pull), but a simple length of 10mm 316 Stainless threaded bar resined into the rock and then fitted with a stainless hanger and a stainless flat washer and nyloc nut (all 316 grade) could be an option. There's a risk that the hangers could be stolen, but a don't thinks any true caver would do that.
MJenkinson
Member
Bob - has anyone ever got a quote for commercial production of the IC anchors? Say a batch of 200?
Madness
New member
MJenkinson said:
Taking a commmon size of plate (3000mm x 1500mm). If the IC Anchor used an area of 150mm x 50mm that would equate to 600 per sheet of plate. Full use of the plate would give a logical batch size. No manufacturer would want to end up with a off-cut of material that they may never use again. Laser profiling is quite expensive due to the overhead recovery rates that companies charge. CNC Laser Profiling machines are not cheap and companies need to recover their investment.
Simon has done a great job in developing this anchor. The key now is to make the manufacture of them as economically viable as possible. Then we need to fund the manufacture and installation of them.
In all honesty there's a limited market for any type of anchor, so they're never going to be available for pennies.
As cavers, we shouldn't take it for granted that the caves we visit will be fitted with good anchors, paid for by someone else. We all need to put out hands in our pockets and contribute.
Bob Mehew
Well-known member
Your faith is touching. Read http://ukcaving.com/board/index.php?topic=20753.msg266486#msg266486 .Madness said:
andrewmcleod
Well-known member
Bob Mehew said:
I'm with you on the weld but this is (I know I've said this before) the SCC that has never been observed in the UK on the tens or hundreds of thousands of climbing bolts, lots of which are 304, installed on sea cliffs around the country?
I guess my questions are:
a) does anyone actually think that say the Raumer anchor is not good enough (i.e. if the approved anchors didn't exist, would these anchors remain unapproved)?
b) if there is a supply issue with the IC anchors, is it better to wait rather than use alternative anchors?
The skill and attention of the installer (mixing the resin right, keeping a sample, blowing out the holes properly, putting bolts in independent pieces of solid rock) is way more important than what bit of metal goes in a hole.
MJenkinson
Member
owd git said:See the post on Rowter hole/ peak district and weep!!!!.
I had no envolvement in the job but hope to 'ave a look .
May I be so bold as to enquire as to who funded the bolts for Rowter - the team?
nickwilliams
Well-known member
The bolts for Rowter were funded by BCA, as were the resin and the equiment used to place them.
Simon Wilson
New member
owd git said:See the post on Rowter hole/ peak district and weep!!!!.
I had no envolvement in the job but hope to 'ave a look .
I usually ignore Old Git's postings because he talks in riddles and whatever he intends, I don't get.
Old Git, what has Rowter Hole got to do with this thread? Weep about what? WTF are you on about now?
MarkS
Moderator
I believe that the IC anchor and BP anchor are both endorsed by the BCA so in principle either/both could be used by the CNCC and the DCA. The CNCC has endorsed the IC anchor as its preferred anchor over the BP anchor on conservation grounds, but the DCA do not currently install IC anchors. Perhaps someone directly involved in the BCA/DCA/CNCC can confirm that.
This thread seems to be largely about options that match the IC anchor performance in terms of strength, longevity and conservation, and about whether the characteristics of IC anchors are really required. The IC anchor vs. BP anchor seems a slightly different debate.
This thread seems to be largely about options that match the IC anchor performance in terms of strength, longevity and conservation, and about whether the characteristics of IC anchors are really required. The IC anchor vs. BP anchor seems a slightly different debate.
