/ Bolt hole brushes
Hello and good afternoon all, I hope everyone’s been out making the most of this weather.
Just a quick one to ask if people who have had experience cleaning bolt holes would recommend any brushes in particular.
I started using some old toothbrushes/boulder brushes, which worked pretty well but were slow and not very durable.
Then I moved onto a tea pot spout brush which was pretty effective but again not really designed for limestone in mind and so again not very durable.
Apparently some climbing gear manufacturers make a specific brush but it’s pretty pricey for what it is, has anyone got any better value but as effective suggestions or suggestions on how to compromise?
Oh and the bolt holes are 10-12mm.
Thanks in advance, Emilio.
Would it not be better to blow the dust out?
Blow AND brush, several times.
Laboratory glassware brushes are great for bolt holes, you can get them in a wide variety of sizes.
Yes blowing is pretty good but not very good for loosening any dust, either that or I need a better set of lungs.
Thanks I’m aware of that, any advice on brushes though?
Thank you, much appreciated, especially as the brush I’d been using for 12mm holes for stuck in a 10mm hole the other day and then the handle proceeded to break.
Brushes readily available from screwfix,toolstation,all fix etc.If you are too tight to buy a blower a piece of flexy pipe and lung power or a bike pump after brushing will get the dust out.A 10mm brush will work in a 12+ hole so just buy those.A proper brush lasts for ages so saves a load of hassle for the sake of a few quid expenditure.
Some air duster cans are relatively cheap and have a little WD40 ntype tube on them, also claim to be "environmentally friendly" (if that sort of thing worries people who drill bolt holes)
> also claim to be "environmentally friendly"
Which is obviously complete bollocks. Butane, tetrafluoroethane, some other hydrocarbon or fluorocarbon from a disposable aerosol can -vs- air from a squeezy bulb or whatever that can be re-used indefinitely.
It cant be too challenging to knock up a helical brush bit for your drill.
I've used tacky little bottle brushes over the years but nothing compares to a dedicated bolt brush like ClimbTech's 1/2" brush. It retails here in Canada for $5CDN which I would hardly call pricey.
For those wondering, you can blow rock dust out of a bolt hole with a tube until you're blue in the face but as soon as you run a suitably sized brush in the hole a significant amount of newly loosened dust will then follow. Brushing out holes is considered an important step, especially for glue-ins.
> "environmentally friendly" (if that sort of thing worries people who drill bolt holes)
What an odd statement.
A refillable aerosol looks like just the thing. They aren't cheap and you need access to a compressor though.
The first hit on amazon, probably not the best: https://www.amazon.co.uk/FIRSTINFO-Aluminum-Pneumatic-Pressure-Storage/dp/B00YF7Q1TI
I’ll look that up now, thank you.
Actually the compressor bit is wrong. I just read the spec more carefully - I can easily hit that pressure with my track pump.
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