When the araldyte joint failed, causing the marking knife safety yoga to rotate around the blade holder. Blade is made from highly allowed Cr-Mn steel and heat treated to HRc These often launched off the lathe. Then I traded up to a mechanical pencil, which never needed sharpening. During this time, I was also reading David's blog and followed the process of him making batches and batches of safetty knives and I heard nothing but great testimonials marking knife safety yoga them. The shank was too tight in the handle, so I decided to machine it down slightly. Andy October 11,

I was moving the knife too fast and with far too much pressure. Once I slowed down and took three light passes in place of one heavy pass , my accuracy took another leap forward. If you need to add some makeup to a knife line, run that mechanical pencil down the knife line, then run an eraser over the pencil line.

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THEN I was expected to split the line when working. It was customary to work to one sixtyfourth inch tolerances or better. That one technique has stood me in very good stead all these years.

If you check the technique paragraph on page 14 of my first book, you will find another couple of subtle points which may help. The position of the flat side of the knife is very important to avoid heading off in the wrong direction or shaving chunks off the sides of your tails or steel layout tools….. This last disaster can be avoided if the heel of the cutting bevel is not lifted too far from the surface of the timber.

OK, you pushed me over the edge. Andy PS — My wife would like a application to join wivesagainstschwarz…. You missed one other step in the layout education of a woodworker, and that is the ballpoint pen. Thanks for posting the tip, Chris. That way I can sneak up to the cut line with the router quite easily. I use that same white charcoal pencil to highlight my marked line in darker woods as you suggested with the lead pencil above.

By Christopher Schwarz. In Chris Schwarz Blog , Joinery. This knife, I thought, might just be a mechanical pencil that never needed lead. So slow down, and take it easy. Chris is the former editor of Popular Woodworking Magazine. He continues to blog and publish woodworking books at Lost Art Press. He's a hand-tool enthusiast though he uses power tools, too.

David Charlesworth October 13, Chris, Good stuff as usual! Eric October 11, This mean't that the ferrule had to be longer on the new design to accept the entire blade. The nice thing about this is that it's added a nice amount of mass to the front of the knife so that it required less effort to cut, and feels like a higher quality item. I wanted the grub screw to be in the centre of the ferrule along it's length.

But after increasing the length of the ferrule, it meant that the grub screw hole was no longer aligned with the hole in the blade. This was a big problem. If the grub screw was to be over-tightened against the side of the blade, there is a high chance the blade could chip and fill the blade slot with metal fragments.

As you'll see later in this article, these are impossible to remove. I tried so hard to avoid this being a carbon copy of David Barrons knife , but on the flip side there was so little I wanted to change about his original design because I loved it so much. In the end I decided to remove the bead at the end of the handle, simplify the shape, I also removed the shoulder that leads the handle into a ferrule, and I was to offer it in a variety of materials.

With the Rob Cosman Marking Knife Yoga addition of a visible grub screw, the design is now noticeably different to Davids original. One thing I couldn't distance myself from was the thumb-hold. I thought it was genius. In addition, due to the fact my blade Marking Knife Safety 2012 was removable, it meant that the blade could simply be flipped the other way around and it would be suitable for both right and left handers!

The lathe had sat idle in my workshop for 4 months while I gathered materials to test the first batch. And I decided to film my first ever attempt at using the metal lathe for Episode 12 of Turning Tuesday. At this point, the knives were complete secret.

Barely anyone knew what I was up to! This is where the real challenges arose. I'm pretty sure I exhausted all potential cock-ups possible before finally coming out with a design and a process that works well. Below are some of my favourite screw ups. There was a split in the rosewood that I didn't see. Suffice to say it didn't like the skew chisel touching it.

I forgot to cut the blade slot before attaching the ferrule. Then ended up mashing it anyway I decided to highly polish the ferrule as an experiment, then proceeded to overtighten it in the chuck jaws The slitting saws I use are extremely flexible. One second I was chamfering the copper, the next second my pants were brown. The shank was too tight in the handle, so I decided to machine it down slightly. Ended up mashing the slot shut. When the araldyte joint failed, causing the ferrule to rotate around the blade holder.

You could get a grub screw in that, right? When I forgot to set the depth stop on the drill and blew through the opposite side of the ferrule. One of the many occurrences where the tap snapped while cutting the thread. This is one of the most annoying! Aradyte rapid didn't work for the wood to metal joint either. These often launched off the lathe. When the slitting saw broke and I decided to mount it on the lathe afterwards as an experiment.

It didn't like it. When you're fitting the blade for the final time and it snaps in the slot. The only slitting saws I could find were available from China. When I got carried away while sanding the handle and ended up shaping the brass ferrule too! A huge problem I faced was breakout within the slot. After adhering the ferrule to the blade holder, every time I drilled and tapped the hole there would be small amounts of metal that would prevent the blade from being fully inserted.

I considered assembling the ferrule and blade holder dry while drilling and tapping the hole, taking it apart, cleaning out the slot, then re-assembling it. But this would almost certainly make aligning the threads difficult. Not to mention the potential of threadlocker leaking into the pre-drilled grub screw hole!

I found that inserting Marking Training Knife Yoga a piece of 0. I usually reserve these ones for myself, friends, and display items if I were to ever set up a stall at an event. After completing the first batch of knives, I have since subcontracted the metal components of the knives out to a small local company. This stops me from having to spend hours slaving over a lathe and milling machine doing repetitive tasks and instead focus on video creation.

However, I still glue, drill, tap, countersink, and chamfer the ferrule myself. As well as turn, finish, and package etc. It's been a real rollercoaster trying to get these things going but the initial feedback has been incredible. I'm seeing lots of happy recipients of their knives all round the globe and I could not be more humbled to see people enjoying them.

If you want to purchase one yourself, you can visit my online store. If you find they are out of stock, be sure to sign up for my marking knife notifications by clicking the button below. They are simply stunning! Knowing the amount of thought behind the design and process makes them even more appealing.

I also want notifications but the link is broken. Decisions, decisions! Save my name, email, and website in this browser for the next time I comment. Matt Estlea. The Story of My Marking Knives. April 21, All the way from initial concept, design, prototyping, manufacturing, and fulfilment. This is the story of how my custom marking knives went from an idea into my head, to a tool that people can use and treasure. The Idea. The First Prototype. Planning and Research.

Blade Sizing. Grub Screw Placement. When it blew up There was a split in the rosewood that I didn't see. Massive Oops I forgot to cut the blade slot before attaching the ferrule. Overtightening I decided to highly polish the ferrule as an experiment, then proceeded to overtighten it in the chuck jaws Bendy Bendy The slitting saws I use are extremely flexible.

Car Crash One second I was chamfering the copper, the next second my pants were brown. Remounting The Katz Moses Marking Knife Yoga shank was too tight in the handle, so I decided to machine it down slightly.

Araldyte Fail When the araldyte joint failed, causing the ferrule to rotate around the blade holder. Drilling Through When I forgot to set the depth stop on the drill and blew through the opposite side of the ferrule. Snap The Tap One of the many occurrences where the tap snapped while cutting the thread. Another Failed Joint Aradyte rapid didn't work for the wood to metal joint either.

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