There really is no trick. More like a lot of trial and error, hard work, plenty of elbow grease and making your own liner. YMMV.
To get the fit right alot of trial and error. I used 0.050" Ti-6-4 which is a natural spring.I meant to do a proper write up on this and still will, but never enough time lately especially with my 4 yr old out of school now Here is a lockblade farmer + scissors.(Image removed from quote.)(Image removed from quote.)(Image removed from quote.)(Image removed from quote.)(Image removed from quote.)
Did you change the shape of the tool at all to get the lock to work?