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Vintage KD Convertible HackSaw - Shortening a Saw Blade
In this video I make a short 3" blade for this vintage K-D Tools Convertible Model 99 Hacksaw.
This saw was designed to use blades from 3 to 12 inches. The shorter blades allow it to cut around obstructions.
Since the saw blade is made from hardened steel, we'll spot anneal it to avoid damaging the heat treatment on the cutting edge.
1920 Patent:
https://patents.google.com/patent/US1382448A
1946 Patent:
https://patents.google.com/patent/US2531135
1934 KD Catalog:
https://archive.org/details/k-d-tools-catalog-no-16-1934/page/6/mode/2up
1948 KD Catalog:
https://archive.org/details/k-d-tools-cat-no-24-1948/page/14/mode/2up
1969 KD Catalog:
https://archive.org/details/k-d-tools-catalog-69/K-D%20Tools%20Catalog%2069/
00:00 Intro
00:50 Making a Short Blade
02:35 Cutting Demo
03:11 Saw History
03:44 Other Design Features
04:25 Outro
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