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#1
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Preserving a slice through a fir
A big old fir tree that used to stand in the middle of the village has been
cut down. A slice has been cut from the lower trunk and has been given to the village school. The idea is that the school will count the rings (about 220 of them) labelling historical events and make a permanent display of local and world history with reference to the tree rings. Nobody so far has volunteered to clean up the rough sawn slice and treat it in such a way that it will not fall apart. I am not even sure it is possible to do it with garden shed tools and equipment. I would be grateful for sugestions or experiences. Tim w |
#2
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Preserving a slice through a fir
Subject
Does your state have an agricultural extension service? If so, they can at least point you in the right direction. Lew |
#3
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Preserving a slice through a fir
"Tim W" wrote in message
. .. A big old fir tree that used to stand in the middle of the village has been cut down. A slice has been cut from the lower trunk and has been given to the village school. The idea is that the school will count the rings (about 220 of them) labelling historical events and make a permanent display of local and world history with reference to the tree rings. Nobody so far has volunteered to clean up the rough sawn slice and treat it in such a way that it will not fall apart. I am not even sure it is possible to do it with garden shed tools and equipment. I would be grateful for sugestions or experiences. Tim w I'd contact the conservation dept of a large museum for advice. diggerop |
#4
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Preserving a slice through a fir
"Lew Hodgett" wrote in message ... Subject Does your state have an agricultural extension service? If so, they can at least point you in the right direction. Lew I am not in the US but the UK so I don't know what that is. Tim W |
#5
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Preserving a slice through a fir
Tim W wrote:
"Lew Hodgett" wrote in message ... Subject Does your state have an agricultural extension service? If so, they can at least point you in the right direction. Lew I am not in the US but the UK so I don't know what that is. In the US it is a government service providing informational assistance, soil testing, etc to farmers, gardeners, and the like. I'm sure the UK has something similar but have no idea what it would be called. You might call Forest Products Laboratories in the US http://www.fpl.fs.fed.us/--while they are a US government agency they will answer questions for non-US citizens on an available time basis. Odds are that they have a publication telling exactly how to do this in excruciating detail, but a quick look on their site doesn't find it. |
#7
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Preserving a slice through a fir
"Tim W" wrote in message A big old fir tree that used to stand in the middle of the village has been cut down. A slice has been cut from the lower trunk and has been given to the village school. The idea is that the school will count the rings (about 220 of them) labelling historical events and make a permanent display of local and world history with reference to the tree rings. Nobody so far has volunteered to clean up the rough sawn slice and treat it in such a way that it will not fall apart. I am not even sure it is possible to do it with garden shed tools and equipment. I would be grateful for sugestions or experiences. Tim w Several years ago I saved a disc of black cherry similar to what you have. What I tried was to wrap mechanics wire around the perimeter and pulled it as tight as I could. The wire was run around twice and the ends were twisted as the wire settled into place. The disc did not split on a radial as others had. Now that it is dry it'll stay that way. YMMV, good luck. How many of these discs do you have to work with? phil kangas |
#8
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Preserving a slice through a fir
Tim W wrote:
A big old fir tree that used to stand in the middle of the village has been cut down. A slice has been cut from the lower trunk and has been given to the village school. The idea is that the school will count the rings (about 220 of them) labelling historical events and make a permanent display of local and world history with reference to the tree rings. Nobody so far has volunteered to clean up the rough sawn slice and treat it in such a way that it will not fall apart. I am not even sure it is possible to do it with garden shed tools and equipment. I would be grateful for sugestions or experiences. So what, this is roughly 4-ft in diameter, then, I'm guessing? How thick did they make the slice(s)? It's essentially impossible to prevent checking an at least some splitting in a section that size. Hopefully they saved several sections so you're not counting on only one shot at it. Bruce Hoadley starts his book "Understanding Wood" w/ a tale as a kid of trying the exercise that's a good object lesson... I personally don't have experience in trying to do so for large sections; I'd second the idea of seeing if can get some advice from a conservationist who might have place to send you if not direct experience. There are some slices of very old redwoods but iirc most do have pretty severe splitting although have held together enough for the purpose. I'd think the PEG somebody else suggested a good way to start; you definitely want the drying process to be quite slow. In UK don't know your sources for such info, you could do a search on the US Forest Products Laboratory site and see if could get any help--I think they have a way to ask questions--this is probably a fairly frequent one, maybe there's an FAQ. -- |
#9
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Preserving a slice through a fir
On Fri, 6 Nov 2009 09:55:28 -0500, "Phil Kangas"
wrote: have. What I tried was to wrap mechanics wire around the perimeter and pulled it as tight as I could. If he decides to go this way, he can use this kit to accomplish it. http://www.leevalley.com/wood/page.a...52&cat=1,43456 |
#10
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Preserving a slice through a fir
"DT" wrote in message ... In article , says... A big old fir tree that used to stand in the middle of the village has been cut down. A slice has been cut from the lower trunk and has been given to the village school. The idea is that the school will count the rings (about 220 of them) labelling historical events and make a permanent display of local and world history with reference to the tree rings. Nobody so far has volunteered to clean up the rough sawn slice and treat it in such a way that it will not fall apart. I am not even sure it is possible to do it with garden shed tools and equipment. That's a nice project. Here is what I would do. Make a good cut with a sharp chainsaw. Cleanup one side with hand planes. Then bag it and soak the entire piece in PEG, this replaces the water with the PEG and prevents cracking. It will take a bit of soaking, months at least depending on the thickness. http://www.rockler.com/product.cfm?p...6&cookietest=1 That's interesting . I had never heard of PEG. Will look at it. Tim w |
#11
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Preserving a slice through a fir
"dpb" wrote in message ... ....rough sawn slice and treat it in such a way that it will not fall apart. ... So what, this is roughly 4-ft in diameter, then, I'm guessing? yes, roughly. How thick did they make the slice(s)? I don't know. So far I have avoided showing any interest. I don't want to get involved unless there is a reasonable chance of success. It's essentially impossible to prevent checking an at least some splitting in a section that size. Hopefully they saved several sections so you're not counting on only one shot at it. I doubt it. Bruce Hoadley starts his book "Understanding Wood" w/ a tale as a kid of trying the exercise that's a good object lesson... I personally don't have experience in trying to do so for large sections; I'd second the idea of seeing if can get some advice from a conservationist who might have place to send you if not direct experience. There are some slices of very old redwoods but iirc most do have pretty severe splitting although have held together enough for the purpose. I'd think the PEG somebody else suggested a good way to start; you definitely want the drying process to be quite slow. In UK don't know your sources for such info, you could do a search on the US Forest Products Laboratory site and see if could get any help--I think they have a way to ask questions--this is probably a fairly frequent one, maybe there's an FAQ. -- |
#12
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Preserving a slice through a fir
On 11/6/2009 12:58 AM Tim W spake thus:
A big old fir tree that used to stand in the middle of the village has been cut down. A slice has been cut from the lower trunk and has been given to the village school. The idea is that the school will count the rings (about 220 of them) labelling historical events and make a permanent display of local and world history with reference to the tree rings. Nobody so far has volunteered to clean up the rough sawn slice and treat it in such a way that it will not fall apart. I am not even sure it is possible to do it with garden shed tools and equipment. I would be grateful for sugestions or experiences. In addition to looking up PEG (probably a good suggestion for preservation), also do a search for information on dendrochronology, which is the study of tree-ring dating. There is probably at least one institution involved with that in the UK, so you might try to contact them. Here in the US, there's a dendrochronology department at the University of Arizona in Tucson; you might look them up at http://www.ltrr.arizona.edu/dendrochronology.html. Good luck. -- Who needs a junta or a dictatorship when you have a Congress blowing Wall Street, using the media as a condom? - harvested from Usenet |
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