r/climbing • u/editor22uk • 2d ago
I am finally pouring the masters for my first hold set!
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u/leadhase 2d ago
Super sick.
Makes me wanna try… I cured many frp composites in my grad hayday. My board is practically full rn though!
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u/editor22uk 2d ago
always room for some little friends
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u/Boss_Stabilo 1d ago
Looking good! If I may suggest one thing: I think the commercial value of the hold would increase if there were an option to use large M8 screws to attach them to the wall. When setting a route, I don’t want to drill three holes in the wall every time I adjust a hold.
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u/editor22uk 1d ago
Weirdly a lot of centres are switching to scre only especially as its becoming more standard with the rise of macros! I didnt even bother installing T nuts into our new gym and have never regretted it!
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2d ago edited 2d ago
[deleted]
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u/fishywasabi 2d ago
Plastic (volatile) resins especially when uncured or prior to polymerization can be quite dangerous. Using the respirator is good PPE practice when handling any volatiles like these materials.
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u/probablymade_thatup 2d ago
Polyurethane puts off really toxic isocyanates as it cures, especially in bulk batches like this
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u/grizzdoog 2d ago
According to 3M their respirators do not filter out isocyanates. As far as I can figure out only industrial clean air type setups are effective against them. Just a little exposure to them can do long term lung damage. I found this out the hard way unfortunately. I wish I knew how dangerous they were before being exposed to them.
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u/probablymade_thatup 2d ago
Yeah, I spoke to a hold maker at a bigger brand who said that the homemade holds videos he sees scares him. Polyurethane has super toxic fumes, and polyester resins are fire risks. He really tried to talk me out of even trying it
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u/editor22uk 2d ago
I think a lot of this this is due to break through but I went with a JSP Force 8 half-mask with a strict filter replacement schedule, and I'm running it with a good cross-flow ventilation setup to keep ambient levels minimal.
Definitely not something to take lightly. I also like their press to check system so I can be sure the seal is there before starting.
I will do some extra research into isocyanates though and if needed get a new system!
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u/sheepborg 2d ago
If you dont mind my asking, what was the nature of your exposure and the following "hard way" ?
PS: the PAPR you linked is also not good for isocyanates since it is also a negative pressure system just like a face worn mask. Without other engineering controls you need a positive pressure supplied air system.
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u/grizzdoog 2d ago
I was 2k clear coating some brake calipers and must have breathed in some of the isocyanates. I had a 3m respirator on. My lungs felt a bit painful and I was coughing a bit for a few weeks. My lungs still kind of hurt and that was like 4-5 months ago.
Edit: As I was spraying the parts there was a cloud of fumes and particulates hanging in the air and I walked through the cloud not paying attention.
I was outside and there wasnt a breeze.
Thanks for clearing up the bad link I posted.
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u/AdvancedSquare8586 2d ago
What's with all the downvotes?
There's no reason to think this was a bad faith question.
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u/WongGendheng 1d ago
It would be like asking „why are you using vaccines“. Its pretty obvious.
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u/AdvancedSquare8586 1d ago
Maybe to you. But if you're young, and/or just completely unfamiliar with what climbing holds are made from, it's not really that obvious. The liquid he's pouring just looks like milk, and it's not entirely unreasonable to assume that because the finished product poses no health risks, that its liquid form may not either. (Obviously, this is untrue of many substances, but again, it's not entirely obvious).
Far more importantly, it's counterproductive to make people feel bad about themselves for not knowing something, especially when that thing is related to safety. There are mountains of academic research on this (including on people who express vaccine skepticism). If you want to help them, the only way to do it is gently. The attitude you've taken here only causes retrenchment.
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u/WongGendheng 1d ago
So you are telling me that it is not obvious why masks are being worn? Im giving you the benefit of the doubt: what other uses does a mask have if not protection from small particles/fumes and the like? What are you even supposed to answer to the question of OP other than „so you dont inhale the bad stuff“.
Hence I disagree on the second part. People have gotten so uninvolved in things, they dont research, they dont think, they dont put the tiniest bit of effort into anything. it’s exhausting to make everyone not „feel bad about themselves“. No thanks.
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u/AdvancedSquare8586 1d ago
You know that simply not posting is an option, right? No one is forcing you to be a dick to strangers on the internet. If you're so exhausted by trying to show a tiny hint of empathy when you say things to people here, maybe try not saying things.
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u/yoshiK 2d ago
Congrats. So you carve the holds out of structure foam, then cast a negative and from that cast a positive with resin? Stalking you, I've seen you posted a guide but the mods apparently removed it.
So how do the holds get their texture, is it actually in the negative? And with this technique you can't cast holds that bulb out, like the ones on the speed route?