3rd Slip Joint

MTBob said:
So that means you heat treated after your final grind, right?
Have you found that you get any warping in the blade with that process?
Did you Cryo?
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I did. I took the grind to 220 grit. I do the -10 degree in the freezer rather than cryo. No trouble warping.
 
I have a question, and this is in no way negative, it's just something I thought about. You are obviously way ahead of me in the folder realm so I figured I would ask. Your liners are brass and your pivot pin is brass. Both have friction contact with hardened steel. Are you worried that the brass will abrade away, leaving a side-to-side wobble in the blade over time? Again, just a question as I was thinking the design through; it may be a non-issue I just thought I would ask.
 
Chris Railey said:
I have a question, and this is in no way negative, it's just something I thought about. You are obviously way ahead of me in the folder realm so I figured I would ask. Your liners are brass and your pivot pin is brass. Both have friction contact with hardened steel. Are you worried that the brass will abrade away, leaving a side-to-side wobble in the blade over time? Again, just a question as I was thinking the design through; it may be a non-issue I just thought I would ask.
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It’s a good question and I think looking at vintage knives is an example of what you are talking about. Since I’m focusing on traditional right now that’s the way I’m building them. At some point I plan on using bushings. Chris- please I’m not way ahead of you. ;>)
 
This one was challenge. I thought the builds would get easier not more difficult. It doesn’t have a firm half way stop and the full open doesn’t’click’. The close is acceptable. But I remind myself how I used to get frustrated making fixed blades so I’m sticking with it. I’m calling this one done and not spending a lot of time on the finish since it’s a ‘lessons learned’ build.


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You may have answered this earlier. Are you using a Rise/Fall indicator aka a Ruple Jig?
I've been watching some YT videos of the slip joint process and have purchased some starter books, but I gotta admit I'm really intimidated by the amount of detailed work it takes.
I'm certainly impressed by your progress.
 
MTBob said:
You may have answered this earlier. Are you using a Rise/Fall indicator aka a Ruple Jig?
I've been watching some YT videos of the slip joint process and have purchased some starter books, but I gotta admit I'm really intimidated by the amount of detailed work it takes.
I'm certainly impressed by your progress.
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Thank you.
I do not have one. The you tube videos I have seen aren’t very detailed like some other knife making videos.

The work at each step - open, half, close, to align the spring with the liners is tedious for me because I don’t have a lot of patience.


if I were to start again. I’d get Culver’s slip joint book first. I’d use a large scale project so it would lessen the finesse it takes with smaller components. I would not do any heat treat on the learning knife. I’d just use it to really understand the mechanics of how these slip joints work.
 
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