Knife Grinding Jig
by marcello bianchi in Workshop > Metalworking
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Knife Grinding Jig
![IMG_3280.jpg](/proxy/?url=https://content.instructables.com/FOL/IEAO/JKN8TC9Q/FOLIEAOJKN8TC9Q.jpg&filename=IMG_3280.jpg)
I made the jig to achieve consistent grinds on both sides of the knife without having to reposition the blade, the jig has a definite location point
Cutting Flat Bar to Size
![7D99894E-BB38-4933-A757-701C0E4D1E3B.jpeg](/proxy/?url=https://content.instructables.com/F9F/0KFM/JKN8SWNM/F9F0KFMJKN8SWNM.jpg&filename=7D99894E-BB38-4933-A757-701C0E4D1E3B.jpeg)
![182B384E-2E0F-403B-AAA4-6E5B2791F1FA.jpeg](/proxy/?url=https://content.instructables.com/FZ6/QEU1/JKN8SWNA/FZ6QEU1JKN8SWNA.jpg&filename=182B384E-2E0F-403B-AAA4-6E5B2791F1FA.jpeg)
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![80A59087-644C-4F9B-9204-B78F5CBCC20A.jpeg](/proxy/?url=https://content.instructables.com/F0H/SG0B/JKN8SWNE/F0HSG0BJKN8SWNE.jpg&filename=80A59087-644C-4F9B-9204-B78F5CBCC20A.jpeg)
I used 12 x 6 mm bar cut to 64mm and drilled 3 holes at 5mm and tapped the middle hole through both bars and then tapped the holes on the ends on on piece only.
I enlarged the holes on the other bar so that the bolts would go through one bar and thread into the other
Cutting Slot in Angle
![0C85C91F-D634-400C-B8CB-750458B89AA4.jpeg](/proxy/?url=https://content.instructables.com/FTL/YKR4/JKN8SWNF/FTLYKR4JKN8SWNF.jpg&filename=0C85C91F-D634-400C-B8CB-750458B89AA4.jpeg)
![Making a Knife Grinding Jig The easy way](/proxy/?url=https://content.instructables.com/FAG/18G3/JKN8TAEA/FAG18G3JKN8TAEA.jpg&filename=Making a Knife Grinding Jig The easy way)
![IMG_3277.jpg](/proxy/?url=https://content.instructables.com/FL7/QVA5/JKN8TD0Y/FL7QVA5JKN8TD0Y.jpg&filename=IMG_3277.jpg)
I cut a slot in the middle of a piece of 50x50x5mm aluminium angle corresponding to the size of the bar knife holder and drilled and tapped a M8 hole for the angle grind adjustment.
second photo of the knife blank fitted in the slot
Cutting Knob Tread Down to Size
![A50B18C6-9B7F-453B-8813-5005C6188D91.jpeg](/proxy/?url=https://content.instructables.com/FFQ/MVBO/JKN8SWNL/FFQMVBOJKN8SWNL.jpg&filename=A50B18C6-9B7F-453B-8813-5005C6188D91.jpeg)
![A0639C59-8131-41DD-8B41-BA932239E9C6.jpeg](/proxy/?url=https://content.instructables.com/FD0/69MA/JKN8SWNQ/FD069MAJKN8SWNQ.jpg&filename=A0639C59-8131-41DD-8B41-BA932239E9C6.jpeg)
![IMG_3279 2.jpg](/proxy/?url=https://content.instructables.com/FPH/UZ4V/JKN8TG0Y/FPHUZ4VJKN8TG0Y.jpg&filename=IMG_3279 2.jpg)
need enough thread so it clamps knife to angle Jig without touching the knife