By using a spring hinge, it pushes against the acorn nut. Then you only have to tighten finger tight. Answer A regular hinge would require it to be attached. Now that it was mostly complete it was time to tighten the hinge and start cleaning it up. Add knob or handles to the back of the bottom plate to give you better handles to move it around. Like it but I will lengthen the mounting plate so the rivet holes can be used to mount the knife. Below is a list of materials and tools that I used to make this. Add Tip Ask Question Comment Download. Make the brass rod length twice the diameter of the hole to keep it from turning around in the hole. I would think the set screw would mess up the threads after a short time. I just adjusted the front plate to be parallel with my grinder and sanded them down to be flush with the plate. Thank you. 4 months ago. If I were to lower my tool rest on my grinder then the 3 inch would work. 11 months ago. Very Cool and a great tutorial . During my test grind, I found that it was easy to accidentally adjust the angle when grinding. Question Future steps will highlight what bolts I used). But if you would rather, using two nuts is definitely a great option. The mounting plate size can definitely be adjusted to your needs and you could easily swap them out. But, I wanted to test out the jig at this point to just see how well it worked. I ended up switching from hex head bolts to button bolts for the bolt post because there was not enough clearance to turn them with the Lexan plate on. To set the hinge, you need to use an hex key wrench to twist the side of the hinge and then insert the small pin when you have twisted as much as possible. I have not tried this on an axe to be positive but I would imagine using a larger face plate or making a fixture to attach to the smaller plate would definitely make it easier. Use a wingnut for one of the nuts maybe with a split washer. It was difficult to adjust the bolt by just turning the end of it so I decided to 3D print a simple knob that I glued to the bolt to make it easier to turn the bolt. To use the jig, place a metal file under the rod and on top of the knife. About: Retired Boat builder,CNC programmer,Process Engineer. Got my vote. I like the ease of the set screw over having to mess with two nuts every time I want to adjust it. to reduce the thread turning easily, simply drill a cross hole to make whipper snipper cord (strimmer line) and insert a length in so it rubs on the side of the thread - if needed you can then put a smaller screew/ bolt in to increased the force of the strimmer line against the thread to further reduce moevemnt, but without marking up your thread. 4 months ago. I set the block at the back of the hinge so that I would have a large angle I could adjust to in either direction. I then drilled a hole in each corner and countersunk it so that I could use a small flat head bolt to attach the Lexan to the bottom plate. I used the bottom plate as a template to drill clearance holes for the bolts for the hinge and the bolt post. Bolt (Must be fully threaded and recommended to be at least 4.5 inches long. I liked how it used a spring hinge which made this simpler and more cost effective. slots would allow different knife rivet holes spacing to work. As I stated before, I didn't like how big the 3 inch tall front plate was so I replaced it with a 2 inch tall plate. used tools used by knife makers to aid in grinding the bevels on knives As you can see, adding any of the above plastics on the bottom will allow it to slide easier. Have you tried it on an a carving axe? 2. 1 year ago I can pretty much go 45 degrees in either direction of vertical. I just did a quick grind and was really happy with how much faster it was to get a good even grind. Put a grid of threaded holes on the front plate so I can use bolts to hold knives in place. According to the designer, this knife sharpening jig doesn’t require a CNC or plasma to build. However, the plan then tells you how to set up a DIY jig that allows you to do just that, and if you want to know how, check it out for more details. To be able to adjust the angle, a bolt is used that pushes against the hinge. As adjusting the angle the acorn nut need to change position. If you are interested, below are some ideas of potential additions. on Step 11. Would this work on a hatchet for a scandi grind or would a larger face plate be required? This layer also provides clearance for the bolts that hold on the bolt post. Is this a common thing to do or your original idea? If you want to use a regular hinge then you will definitely need a spring. It's been really handy for grinding all sorts of things when it needs to be at a specific angle. I like the fat taper this jig puts on the material, but sometimes I use a smaller file for my material, which would require a thinner taper... Will this work for something like this? There should be a little gap so that the plates do not rub against the round part of the hinge when it rotates. (both ends) I will also add a spring on each side to pull the plate against the adjustment bolt to prevent it from falling forward. I have included the Tinkercad link to the knob I made for my 5/16 bolt below. I have two ideas here: 1. That's a neat idea. I was thinking the same thing about how the set screw would slowly ding up the threads on the adjusting bolt - and thought using extra nuts, as you suggest, would solve the problem! The 2 nuts would keep it much more stable.The rest of the design seems perfect! The tighter the better. I originally used a 6 x 3 inch plate for the front plate but changed it to a 2 inch wide plate later), Steel Block (Around 4 x 1.5 x 0.75 inches), Plastic sheet to reduce friction on the bottom (must be the size of the bottom plate, 7.5 x 3 inches), Assortment of bolts (These can vary depending on what you have available. This could be easily modified depending on what you have available. Because the bolt post is pretty far back and I used a long bolt, I have a large degree of adjustment. For those who are curious, the following are the coefficients of friction for steel on these various materials: Hint, lower is better. what was the total cost of all supplies, and what do you think about substituting those screws, (Just the ones that can be substituted) for welds? 1.DIY Knife Sharpening Jig. Hi, love the pattern, want to make one my self, how do yuo attach the acorn nut to the back of the door hinge? 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