Roger T, the strap setup will have to be changed if I want them to last. Some deburring may go a long way, but not a permanent fix IMO. Grommets would be nice to minimize abrasion. The plates are just slightly thinner then my shoe width. About 1/4" on each side. I was trying to get away without making these adjustable for different shoe widths and figured they would hold better if the straps contacted some of the sole.
Derek, you may be right, I haven't used them yet so we'll see. Perhaps a different strap configuration would hold better. I wanted to add some tabs bent up, but there were some complications with that. The first is that I would then have to make them adjustable, and the second is that I only have a simple sheet metal brake and it is only capable of simple bends.
I do agree that the kahtoola is a superior design, and I plan on making a more robust crampon, but it is overkill for my upcoming trip which consists of mostly icey trails. The short ups and downs I'll be dealing with wouldn't be worth carrying anything more - I'll just adjust the crampon to sit at the front of the shoe and adjust my walk accordingly.
That being said, I am already well on my way to working on the next version...adjustable with all tabs. I'll post pics when I get around to finishing them.
Regarding your thoughts about the slot causing some weakness, again we'll have to see. I know that the ULA ones were suffering from this problem, but they were aluminum. I chose the 0.04" thickness because I calculated that it would take a 200lb direct side load to snap it off. That gave me a good idea of where to start. If it ends up being a problem, I'll move the slot.
Thom, I saw your crampons when I was searching a while back. I like them. Heavier yes, but they work and if you could remove them in the field, that would awesome. Shoe attachment was very robust. I need to work on my...obviously.
lk, no long term results...in fact, I have no results as I haven't used them yet! Still waiting for the snow and ice.
Rod, thanks for the compliment. I think I understand what you mean, but I don't think it can be done easily (definitely not on my machine) but I'm not a sheet metal expert. Cutting the triglide right out of the crampon is a great idea though. I like it and it simplifies the amount of parts I need to use...you've got me thinking! As for the color red, I cut out anodizing any of these things after the terrible results on the early version of the ice axe. I can paint it if you like? :)
So, would everyone prefer to see a ti kahtoola style crampon at a heavier weight? Just shooting from the hip, I would think it would be roughly twice the material so maybe 4 to 4.5 oz each.