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Making a Marking Knife #4: Almost Done!

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Blog entry by Eric posted 2162 days ago 2380 reads 0 times favorited 6 comments Add to Favorites Watch
« Part 3: When the Bit's Too Small for the Brace Part 4 of Making a Marking Knife series no next part

So I had a good couple days in the shop before I packed it all up the other day. Besides doing the cushion frame for my friend, I did a lot of work on my marking knife. The first task was to get the blade satisfactory. In the end, I did this by cutting a 30(ish)-degree bevel on a piece of scrap, and then filed the bevels of the blade along that angle. It’s not perfect, but it’s pretty good. I then honed the blade on my waterstones, which was a real bear with no honing jig. By the way, the blade is not discolored – that’s just me in the reflection! The black line is just to let me know how far in it’ll be mounted.

09 blade

Then I drilled a hole in the very center of the top (as best I could determine it) with my little dowel bit (for the tang), and hammered a few tiny nail holes in along the blade line to create a channel for the blade. Then I took my failed blade (first try) and drove it in spear-first to pave the way for the final blade. After that, I cut, trimmed and whittled the top down to the shape you see below. The ferrule is actually a flange nut, and as you can maybe see, I was able to carve some threads on the shaft by test-fitting the nut onto the handle.

10 slot for blade

Since I am using a nut as my ferrule, the hexagonal nut shape isn’t the most attractive thing to look at. I thought about filing down the corners of the nut, but that’d take too long. So I decided to cover the nut with a wooden sleeve. It’s a mystery wood, but I’m hoping the color contrast will be nice. (That’s just black paint there on the outside – it’s from a chair I found on the side of the road.)

11 sleeve

When that was done, I epoxied the nut into the sleeve and trimmed/sanded it so it was the exact depth of the nut.

12 flange nut mounted

Then I glued and screwed the nut/sleeve onto the shaft of the handle.

13 flange nut and sleeve screwed on

Finally, I mounted the blade! First I slathered epoxy on the tang and base. I then pushed it in as far as it would go with pliers (covered with cloth to protect my nice shiny polished blade). When I couldn’t go any further, I mounted the blade in my vise and pounded down with a mallet until I was at that black line I’d drawn.

14 blade mounted

The knife is now wrapped in bubble wrap in my Box O’ Tools somewhere, getting ready to go on a little cruise. When I unpack it at our new home, I’ll whittle it down to its final shape. In retrospect, I really should have done the whittling first, and then mounted the blade. But I was just too excited. You know how it is.

-- Eric at http://adventuresinwoodworking.com



6 comments so far

View PurpLev's profile

PurpLev

8476 posts in 2251 days


#1 posted 2162 days ago

nice sheen on the blade!

did you get a chance to use the knife already? just curios as how it feels in usage – looks really cool :)

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View Eric's profile

Eric

873 posts in 2386 days


#2 posted 2162 days ago

Nahh…I had to pack it up the next day, and wanted to be extra super duper sure the epoxy had cured.

I have no idea what shape I’ll make it in the end, or if it’ll stay thick. I’m just gonna wing it!

-- Eric at http://adventuresinwoodworking.com

View teenagewoodworker's profile

teenagewoodworker

2727 posts in 2371 days


#3 posted 2162 days ago

very cool! i think after seeing this i might have to try my hand at making one too!

View lew's profile

lew

9954 posts in 2358 days


#4 posted 2162 days ago

Eric,

The knife is coming along nicely, can’t wait to see the finished product!

Lew

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View lew's profile

lew

9954 posts in 2358 days


#5 posted 2162 days ago

Eric,

Here are a couple of pix of a knife. I wasn’t as smart as you when designing the blade. I started with a 1/4” x 1/4” piece of machine tool stock and created the blade. However later I discovered the blade was too thick to mark really small dovetails so I ground it thinner. Doesn’t look so good but it works. The ferrule is a brass compression fitting for copper pipe from the hardware store. The handle is an scrap of Purpleheart.

Lew

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View sharad's profile

sharad

1063 posts in 2407 days


#6 posted 2162 days ago

I am eager to see your finished product.
Sharad

-- “If someone feels that they had never made a mistake in their life, then it means they have never tried a new thing in their life”.-Albert Einstein

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