Okay! It's time for a little update. I've been behind on my photo editing... and need to play catch up. So I'll start from the beginning here.
I surprising number of you ordered the burlwood option, 9 people to be exact. So a few days were dedicated to burl wood harvesting and drying.
First I have to find the burl. They grow on choke cherry trees. I happen to live in a rare bubble of choke cherry tree habitat... not sure why they like it here, but they do. If a tree has a large burl like this, it's almost certain that it will soon die, or is already dead. So cutting it down to use for something that will last a lot longer than the tree itself ain't a bad way to go.
The burls are cut down and chainsawed into smaller sections, being careful to cut out the bad spots, and avoid areas that are prone to cracking, like the very center of the tree. There is a ton of waste, more on that later.
I may get 2 or 3 good Nomad blocks out of a burl like this.
Rough cut.
These chunks are hand cut into smaller sections, ready for the drying stage.
To properly dry a burl without cracking the hell out of it, you'd need to wait a couple years at least... so that's not going to work for me.
I go with the microwave approach.
Microwave drying is a way to get the same end result in a few days.
The blocks are heated in short bursts, then placed in a cooler to rest for 30 minutes. This cycle is continued till the block is dry, usually around 6-8 times for a block this size.
Each block is weighed periodically to record loss of water.
The heat and humid environment allows the wood to move and dry without excessive cracking.
Much experimentation went into the process. This is the result of a failed attempt, too much heat, lots of cracking.
A block can also be over-dried and start to burn in the center.
A successful run looks like this, no surface cracking.
Still, there are parts of the burl that are almost guaranteed to crack or open up. Voids that were closed up when the wood was wet, transitions between heartwood and sapwood, etc..etc...
Even after I had the process down, there were still a lot of failures. The four blocks on the desk represent the good blocks out of all the rest in the background that were unusable for making Nomads.
I dry the blocks oversized, so surface cracking can be cut away later.
The block on the left is about the size I need to make a Nomad. The block on the right shows the size I start with in the microwave.
After the blocks are cut to rough size, I leave them in the shop to acclimate, and weight them daily to make sure they are no longer loosing weight.
And a sneak peak at the finished abalone discs, ready to go into the buttons.
Thanks to everyone for being so patient, it's been a lot of work getting everything together, always more than you expect! ha.