Finding appropriate wood for infilling planes is the single biggest challenge to a planemaker. Sure the price of metal is constantly moving... but they aren’t making high quality wood anymore! At least not the stuff that I need to use.
A few years ago, I picked up this rather odd-shaped piece of African Blackwood. I knew right away it was old - from the tool marks used to cut it (an axe not a chainsaw), the color (purple black, not brown black) and how it sounded when I tapped it with a metal object (a hollow ring as opposed to a dead thud). I have been storing it for a few years now, and the need for a few more A5 and XSNo.4 sets prompted me to cut into it.
The first step is to create a few flat reference surfaces - a real challenge with such a heavy and awkward piece of wood (African blackwood has a similar weight to volume ratio as mild steel). I use a sled with my bandsaw and slowly start to establish a flat surface.
This small log had quite a bend it in - so rather than square it up and waste all that material - it made more sense to cut it at the bend. This would also give me a chance to see what was going on inside - there were several dips and pockets on the outside and I needed to know if they affected the interior. The photo above show the chalkline to mark the crosscut.
Time for a deep breath...
Phew... not too bad.
And a close up to the grain. This is pretty typical. Some of the exterior voids and pockets go absolutely no where... some lead to disasters.
I always start milling the worst piece and work my way to the best piece. Here is the short end squared up a bit more - a pretty ugly looking thing at this stage.
Another deep breath... time to split it.
And a bit of a disaster. Some pretty serious inclusions to work around. Thankfully I cut everything oversized so I should be able to get a few parts from these two pieces.
On a positive note... the moisture meter confirms what I suspected... this is very old, dry stock.
Several hours later - I was done milling the short end. Three XSNo.4 rear infills, two XSNo.4 front buns (I had a spare from the last time I milled, so I have 3 complete sets), and 5 front buns for either A5’s or A6’s.
I apply a quick coat of shellac on the endgrain, date each piece, and put them on the shelf until they are needed.
10 Comments:
Konrad,
I hope that you had some protection from the dust.
Steve
Hi Steve,
Sure did... Jill must have taken that photo in one of the few moments when I took it off. We had a large fan installed in the window and it moved an incredible amount of air (dust) as we were working. It was also a very windy day - which helped too. Thanks for your concern.
Cheers,
Konrad
Holy Cow Konrad!
Finished an awesome plane AND demolished a substantial sized room AND a blog entry!? All in one day! Where are you getting the energy from? You're no Spring Chicken you know. Slow down you're making the rest of us look bad! :-)
Take care!
Regards,
Ed
Hey Ed,
Trust me - I am feelin it today:) At least everything still moves ok.
Cheers,
Konrad
Oh man. I sympathize with your efforts Konrad. I spent most of last summer tearing lathe and plaster out of my farmhouse. Nice work! It's gonna be totally worth the work.
Hi Cody,
Yeah - we are pretty excited about the new room. The lathing just found a home - a friend is taking it to use for kindling. I love when stuff is re-used!!
Cheers,
Konrad
Apparently some plaster was mixed with asbestos, instead of horse hair. Keep safe. Beautiful work, house and planes.
Niiiice!! ;-)
Cheers
Aled
Hi Tyler,
Thanks for the warning. Was the use of Asbestos a regional issue, a certain time period or both?
Cheers,
Konrad
Hey Aled - thought you‘d like that:)
Cheers,
Konrad
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