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Jarrah Top
Furnished content.
(from Lumberjocks.com)


Jarrah TopThis is a top I made to see if I could make one to run 6 minutes. It is made from Jarrah wood and had a brass insert in the bottom and a hardened 3/16” steel ball pressed into it for the point to ride on. It is 4 3/8” diameter and 3 1/2” high and weighs 17.9 ounces with a 3/8' x 1/2” dovetailed shape band of lead in the perimeter.The wood was turned with a spigot/tenon on both ends. Then it was parted into 2 pieces. The bottom half was grooved and filled with molten lead and faced flat. The top was faced flat and glued on and it was bored for the handle and the brass pivot on the bottom. It is finished with Danish oil and has yet to be buffed and waxed.
I made a video of it running: https://studio.youtube.com/video/4UjvN-jABCI/editIt originally ran 9 min 22 sec when it started spinning at 2500 rpm but in the video the speed started at 2077 and it only ran a little over 7 minutes. I have had other 8 and 9 second runs but I must have been tired tonight and did not pull fast enoughCheers, Jim



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