Make a Hybrid Marking Knife

If you spend as much time watching my Instagram feed as I do, you'll see TONS of cool wood/acrylic hybrid blanks. After seeing my first marking knife with hybrid scales, it was on my to-do list. After a couple years of slowly gathering pieces, making vacuum chambers and pressures pots, I've finally gotten to a point to actually make it happen. I replaced my jointer blades a while back stashing away the old ones  and this summer I collected my last piece of material when I traded a slab of mesquite for a pile of burls.

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Hybrid Knife Scales

hybrid castings before/after trimmingIf you're not sure what a hybrid knife scale or blank is, it is typically a piece of wood that has been stabilized and then cast in some type of resin. Typically you'll see burls cast in resin but cactus, pinecones, lathe shavings and many other things can make interesting blanks as well. For my hybrid blanks, I'll be using a boxelder burl cast into a florescent green resin.I won't be going into great detail on stabilizing and casting because I plan on making detailed videos and articles on the topics in the coming months. I will give you a high-level description as well as some additional resources where you can find out more.

Stabilizing Wood

What You Need

To stabilize wood you'll need a vacuum chamber w/pump, stabilizing resin, woodish stuff and a toaster oven. If you want to read more about making a vacuum chamber, you can check out my previous article, "How to Make a Vacuum Chamber". The stabilizing resin I use is Cactus Juice by turntex.com and the toaster oven was something I picked up on Craigslist for about $20. In my case, the woodish stuff I was stabilizing was some boxelder burls but you can pretty much stabilize any kind of wood.

What is it and Why do it?

If you want to do any shaping on the front of the handle where it will meet the front of the blade, now is the time to do it because the next step is to get everything epoxied and clamped together. I just use the every day 5-minute epoxy and try my best at covering the blade with painters tape to help with squeeze out. The rest of the squeeze out  will be cleaned up on the sander when doing final finishing. After the epoxy has had a good chance to cure, you can cut or sand the brass pins flush and then give the rest of the handle a good sanding to remove any epoxy squeeze out and to shape it how you want.
I hope you enjoyed this article because I had a good time figuring out this entire process. If you end up making something similar, send me some pictures so I can share them on my social media!