Do away with the plastic parts. Go aluminum pipe and galvanized fittings. If you are in an agricultural area, a sprinkler supply place will do the threading for minimal $$.
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This is video from the above referenced cave. Video didn’t turn out very good, 9 years ago it was a lot harder to shoot good video underwater. I got some condensation in the housing and it made it foggy.
This dive was 5 hours round trip. Some of that time was spent transiting/exploring dry...
Integrity is important and can't be bullshitted.
Bidding 6K against a 10K bid that you know about is suspect (probably bid high because it was out of comfort zone).
Did the customer get 6K worth of work? If the climber made $300, I'd say the customer got taken, akin to insider trading.
Would...
Working from memory. They are a fairly stiff kernmantle, ends are stitched to presumably secure the core, also makes for a very rigid end that won’t work through a knot. I’m running it with a barrel knot through a rigging plate.
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I buy 3/8 .063 RDR chain by the 100' spool at the fire department and we throw most loops away once it is beat up too much. It is magnitudes tougher than steel chain, but it doesn't cut wood as well and it's expensive. For fire/rescue use, I believe it's the best out there.
I've not found...
Thanks for the tip: https://www.youtube.com/user/daigentanoen
The rings, and most aluminium stuff, have a good finish if I do my part on tool selection. I don't need to do any additional sanding or buffing.
I have a 13x36 Clausing Lathe and a small (750lb benchtop) Enco Mill. I also have a...
I'm using 6061 T6. The bigger ones are from 3" stock. I've made various sizes. The 3" 6061 is $60-70 a foot and the widest/thickest ring I've made is 2"
Say $10-15 in materials per ring that size.
No CNC in my shop, all by hand. Plain finish, no heat treat.
Shop time, I'd say 1 hour per ring...