I have been using this bench consisting of three 50x200x2,000 jarrah slabs on a steel frame for the last few years. I bought a Veritas sliding end vice a couple of weeks ago so I need something a bit better than twisted slabs.
So, I thought, I will flatten the slabs and joint them and all will be well. They are probably about 100 years old so they should be pretty stable now. They came from the Port Adelaide wool sheds pulled down in the 80s.
The center slab was the worst with severe cup and twist which I roughly flattened using a scrub plane. After which I created two clean edges with a track saw. I then created a straight edge on two planks to use as guides and made a sled for the router to flatten the top. I then used a smoothing plane to take down any nibs left behind. There are some resin voids which I filled with epoxy. There is a very slight rise towards the center but I will do a final flattening once the slab is all together.
I will proceed to do the same to the other two slabs.
I have been contemplating using 10mm threaded rod (three or four along the length) to hold it together. Now the question is do I glue the slabs and rely on the glue joint, use glue and reinforce with the threaded rod or do I just use the rod? My concern with the threaded rod is that if it expands it may cup if the threaded rod does not allow it to move freely.
Any advice would be appreciated.
You can see the first board here. It came out pretty well I think. You can see the sled I used there. The other two planks are under all of the tools.
IMG_1370.jpg
So, I thought, I will flatten the slabs and joint them and all will be well. They are probably about 100 years old so they should be pretty stable now. They came from the Port Adelaide wool sheds pulled down in the 80s.
The center slab was the worst with severe cup and twist which I roughly flattened using a scrub plane. After which I created two clean edges with a track saw. I then created a straight edge on two planks to use as guides and made a sled for the router to flatten the top. I then used a smoothing plane to take down any nibs left behind. There are some resin voids which I filled with epoxy. There is a very slight rise towards the center but I will do a final flattening once the slab is all together.
I will proceed to do the same to the other two slabs.
I have been contemplating using 10mm threaded rod (three or four along the length) to hold it together. Now the question is do I glue the slabs and rely on the glue joint, use glue and reinforce with the threaded rod or do I just use the rod? My concern with the threaded rod is that if it expands it may cup if the threaded rod does not allow it to move freely.
Any advice would be appreciated.
You can see the first board here. It came out pretty well I think. You can see the sled I used there. The other two planks are under all of the tools.
IMG_1370.jpg
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