Anyone Remember This Drying Fad?
While retrieving some red oak to make shoe moldings, I came across this back
on top of the lumber rack. Anyone recall when this fad was current? Seems it came from "down below" originally. http://photobucket.com/albums/d160/G...t=02816bde.jpg Fluorescent light, and victim of slow autofocus, but the idea is what counts. Theory was to restrain the shrinkage across the grain to retain a bigger diameter piece for re-turning. As I recall, it was pretty much a disaster at my house. This piece is really a crap chunk which might have faced a good one across the log, which is why, I suppose it hasn't been finish turned in say, five years? http://groups.google.com/group/rec.c...d 587584e30d6 Turns up the name Soren Berger and a date TEN years ago. Maybe Susan's right and I ought to incinerate some of the stuff I've put farther and farther away. Don't think I'd ever re-turn something like this today. Of course, if the games are a blow-out.... |
Anyone Remember This Drying Fad?
In article , "George" George@least
wrote: While retrieving some red oak to make shoe moldings, I came across this back on top of the lumber rack. Anyone recall when this fad was current? Seems it came from "down below" originally. http://photobucket.com/albums/d160/G...rrent=02816bde. jpg Fluorescent light, and victim of slow autofocus, but the idea is what counts. But George, by my expert analysis, it appears you placed the brace in the wrong direction to the grain. According to Soren's instruction, the brace should be perpendicular to the grain direction - i.e., against the side grain, not the end grain. In the thread you referenced Soren Berger wrote: "To keep bowls as round as possible insert a length of wood 1/2"x1"in the top of the bowls this stick should be placed accross the run of the grain just cut these sticks on the bandsaw with a slight taper on the ends with an easy fit into the bowl..." Hmmmm? -- Owen Lowe Northwest Woodturners Pacific Northwest Woodturning Guild ___ Tips fer Turnin': Place a sign, easily seen as you switch on your lathe, warning you to remove any and all rings from your fingers. Called degloving, extended hardware can grab your ring and rip it off your finger. A pic for the strong of stomach: www.itim.nsw.gov.au/go/objectid/2A3AC703-1321-1C29-70B067DC88E16BFC/index.cfm Besides, rings can easily mar the surface of a turning as you check for finished smoothness. |
Anyone Remember This Drying Fad?
From the grain at the rim of the bowl it appears correctly placed.
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Anyone Remember This Drying Fad?
"Owen Lowe" wrote in message ... But George, by my expert analysis, it appears you placed the brace in the wrong direction to the grain. According to Soren's instruction, the brace should be perpendicular to the grain direction - i.e., against the side grain, not the end grain. In the thread you referenced Soren Berger wrote: "To keep bowls as round as possible insert a length of wood 1/2"x1"in the top of the bowls this stick should be placed accross the run of the grain just cut these sticks on the bandsaw with a slight taper on the ends with an easy fit into the bowl..." Hmmmm? You'll want to look again. It is indeed across the grain. You can see the heart at the 1:00 position and a CA'd radial check at 2:00. As you no doubt know, placing it along the grain would be worthless, since contraction is almost nil in that direction. IIRC, some advocated using plywood disks as well. Tried them, too. I think I did three-four woods with three or four types of crosspieces. Almost 25% blew open, including, the first and only instance I've had with aspen. |
Anyone Remember This Drying Fad?
George wrote:
I think I did three-four woods with three or four types of crosspieces. Almost 25% blew open, including, the first and only instance I've had with aspen. It seems to me that crossbracing is going to encourage cracking by not letting the wood flex as it wants to. It may work with some species whose strength is high and shrinkage is low, but for the sake of saving maybe one centimeter of diameter, I don't think it is worth the risk. -- Derek Andrews, woodturner http://www.seafoamwoodturning.com http://chipshop.blogspot.com - a blog for my customers http://www.seafoamwoodturning.com/TheToolrest/ - a blog for woodturners |
Anyone Remember This Drying Fad?
In article , "George" George@least
wrote: You'll want to look again. It is indeed across the grain. You can see the heart at the 1:00 position and a CA'd radial check at 2:00. As you no doubt know, placing it along the grain would be worthless, since contraction is almost nil in that direction. Well, it's your bowl, so you'd know... but it appears to me to be side grain from 11:30 to 3:00 and similar opposite. I guess they're growth rings around the heart then. -- Owen Lowe Northwest Woodturners Pacific Northwest Woodturning Guild ___ Tips fer Turnin': Place a sign, easily seen as you switch on your lathe, warning you to remove any and all rings from your fingers. Called degloving, extended hardware can grab your ring and rip it off your finger. A pic for the strong of stomach: www.itim.nsw.gov.au/go/objectid/2A3AC703-1321-1C29-70B067DC88E16BFC/index.cfm Besides, rings can easily mar the surface of a turning as you check for finished smoothness. |
Anyone Remember This Drying Fad?
"Derek Andrews" wrote in message ... George wrote: I think I did three-four woods with three or four types of crosspieces. Almost 25% blew open, including, the first and only instance I've had with aspen. It seems to me that crossbracing is going to encourage cracking by not letting the wood flex as it wants to. It may work with some species whose strength is high and shrinkage is low, but for the sake of saving maybe one centimeter of diameter, I don't think it is worth the risk. -- The one under examination, which went toward warming the house last night, had lost 1/4" of the ~10 it began with. Normal for hard maple that diameter would have been 1/2", so there certainly wasn't a lot gained. I think what kept this one from blowing apart was the obvious compression of the center post. I'm sure the concept was that the wood was in a plastic state when it was merely wet. I have placed hot microwaved pieces over molds with reasonable success, but there the lignin's weakened because of the heat. I know I quickly discovered that trying to weight a stack of planks to control warp was a fool's errand. Lot of power there. |
Anyone Remember This Drying Fad?
"Owen Lowe" wrote in message ... Well, it's your bowl, so you'd know... but it appears to me to be side grain from 11:30 to 3:00 and similar opposite. I guess they're growth rings around the heart then. Actually, if you look at the base of the pillar, you will see classic signs of an uphill scrape beginning at around 1:30, recommencing at 7:00 or so. Dead giveaway. Must have been using a dull gouge by the time I bottomed that beauty. |
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