DIY Scratch Awl - 2 Ways
by KagedCreations in Workshop > Metalworking
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DIY Scratch Awl - 2 Ways
This Instructable coincides with my entry into Mitch Peacock's ToolMake16. Originally I intended to make a an icepick. However I went with a 7 mm 01 Tool Steel rod and i think it's just a little too thick. These turned into more of an scratch awl/center punch, still a useful tool. I choose to make one out a acrylic and another inspired by David Waelder's icepick, using a bullet casing from a 30-30.
What you will need:
-- 4-12"s - High Carbon Steel Rod (i used 01 Tool Steel)
-- Handle material - you can use your imagination here - I used an acrylic pen blank and 2 spent 30-30 bullet casings
-- 2 Part 5-minute epoxy
-- Solder / flux
-- Torch
-- Sandpaper
-- Metal or Plastic polish
-- Lathe - I used to shape the acrylic handle but you could easily use other tools to achieve the desired shape
-- Drill - Not 100 % necessarily but it'll make your life easier
-- Bench Grinder - You could also use a belt sander or another method of shaping the metal.
-- Reciprocating Saw
Get the Handles Ready.
Acrylic Handle:
Step 1 - Drill out the center of your blank, i find drilling on the lathe always hits dead center.
Step 2 - Mount on the Lathe. I mounted it on my pen mandrel, if you prefer to turn between centers that's fine.
Step 3 - Turn down the material to your desired shape. I mostly used a roughing gouge, and a carbide tool for finishing
Step 4 - Sanding. Everyone's favorite step. For acrylic pieces, I wet sand with 600 grit paper and then move to micromesh sanding pads which go up to 12,000 grit.
Step 5 - Polishing. I use a friction polish to bring out the final shine.
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Bullet Casing
Step 1 - Sort through spent rounds to find a couple casings that are in good condition.
Step 2 - Set aside for future use.
Disclaimer: Always exercise caution when using firearms or any materials related to firearms. When using casings ensure that they are from spent rounds and the primer has already been fired.
Getting to the Point
Step 1 - Cut your round stock to your desired length. I used a reciprocating saw but you can use whatever you want. Your length will depend on the handle you are planning on using.
Step 2 - Mount the stock into a drill. You could turn it by hand but I've found the spinning helps keep everything even.
Step 3 - Use your bench grinder to create a point in your round stock.
Ensure you quench often to avoid overheating (which could weaken the steel)
Attaching the Handles
Acrylic:
Step 1 - Test fit your work. Make any adjustments necessary
Step 2 - Mix your two-part epoxy throughly
Step 3 - Apply the epoxy to the tang
Step 4 - Slide the spike into the handle
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Bullet:
Step 1 - Ensure your torch is fueled up and ready to go.
Step 2 - Position the solder over the bullet casing you wish to use for a base, heat it up letting about 8-10 drops (use your judgement) fall into the casings.
Step 3 - Prepare your metal by applying flux
Step 4 - Use your torch to heat the outside of the casing; this will cause the solder inside to melt again.
Step 5 - Quickly slide the metal into the casing allowing it to cool.
Step 6 - Clean up overflow (if any) - you can reheat until it falls off or use a file.
Step 7 - Slightly pinch the top of the second casing; this will cause a tight fit for the lid.
Step 7.5 - I haven't done this but am exploring the option of pressing a magnet down into the lid casing to make it more secure
Step 8 - Optional - Clean up the casing. Use some brass polish to bring the shine out. Leaving it more natural is always a solid option as well.
All Done
With that you are finished with two different scratch awls / center punches. There are a ton of other ways to get this done. I'd love to see how others have done it and where I can make improvements. I don't work a lot with metal but am always looking to learn more. I hope you've enjoyed this Instructable and look forward to doing more in the future. If anyone has any questions or if I can make anything clearer please let me know.