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Woodturning (rec.crafts.woodturning) To discuss tools, techniques, styles, materials, shows and competitions, education and educational materials related to woodturning. All skill levels are welcome, from art turners to production turners, beginners to masters. |
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#1
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Turning spruce--followup
After the roughed bowls were dry (no longer loosing weight) I finished
turning a couple and finished them with the usual shellac/wax finish (Crystal Coat). In two days they were sticky. I wiped them down with acetone and sanded down to the bare wood. Applied two coats of polymerized tung oil (Lee Valley). They looked good for nearly a week then the sap mixed with the tung oil and made a wrinkled soft mess over the heartwood. Scraped and sanded to the bare wood, applied two coats of Bull's eye shellac, using 0000 steel wool after each coat was dry. Again used the polymerized tung oil. Same result only it took longer to wrinkle up. Scraped, sanded, acetone then 4 coats of shellac until a slightly glossy finish, then two coats of tung oil. So far this has stayed hard and the grain shows well. The only problem is getting a level coating each time, requiring steel wool to even it up. I would have never fooled with the stuff if it hadn't been for the sentimental value of the tree and folks wanting bowls from it. -- Gerald Ross Cochran, GA Abstinence makes the heart grow fonder. |
#2
Posted to rec.crafts.woodturning
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Turning spruce--followup
On 05/05/2011 05:42 AM, Gerald Ross wrote:
After the roughed bowls were dry (no longer loosing weight) I finished turning a couple and finished them with the usual shellac/wax finish (Crystal Coat). In two days they were sticky. I wiped them down with acetone and sanded down to the bare wood. Applied two coats of polymerized tung oil (Lee Valley). They looked good for nearly a week then the sap mixed with the tung oil and made a wrinkled soft mess over the heartwood. Scraped and sanded to the bare wood, applied two coats of Bull's eye shellac, using 0000 steel wool after each coat was dry. Again used the polymerized tung oil. Same result only it took longer to wrinkle up. Scraped, sanded, acetone then 4 coats of shellac until a slightly glossy finish, then two coats of tung oil. So far this has stayed hard and the grain shows well. The only problem is getting a level coating each time, requiring steel wool to even it up. I would have never fooled with the stuff if it hadn't been for the sentimental value of the tree and folks wanting bowls from it. You should have cooked the bowl to crystallize the sap... -- Kevin Miller Juneau, Alaska http://www.alaska.net/~atftb "In the history of the world, no one has ever washed a rented car." - Lawrence Summers |
#3
Posted to rec.crafts.woodturning
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Turning spruce--followup
Kevin Miller wrote:
On 05/05/2011 05:42 AM, Gerald Ross wrote: After the roughed bowls were dry (no longer loosing weight) I finished turning a couple and finished them with the usual shellac/wax finish (Crystal Coat). In two days they were sticky. I wiped them down with acetone and sanded down to the bare wood. Applied two coats of polymerized tung oil (Lee Valley). They looked good for nearly a week then the sap mixed with the tung oil and made a wrinkled soft mess over the heartwood. Scraped and sanded to the bare wood, applied two coats of Bull's eye shellac, using 0000 steel wool after each coat was dry. Again used the polymerized tung oil. Same result only it took longer to wrinkle up. Scraped, sanded, acetone then 4 coats of shellac until a slightly glossy finish, then two coats of tung oil. So far this has stayed hard and the grain shows well. The only problem is getting a level coating each time, requiring steel wool to even it up. I would have never fooled with the stuff if it hadn't been for the sentimental value of the tree and folks wanting bowls from it. You should have cooked the bowl to crystallize the sap... My microwave is too small. :) -- Gerald Ross Cochran, GA Puritanism: The haunting fear that someone, somewhere may be having fun. |
#4
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Turning spruce--followup
On Thu, 05 May 2011 09:42:40 -0400, Gerald Ross
wrote: I'm convinced.. I'll never turn spruce.. Thanks for the feedback, Gerald.. After the roughed bowls were dry (no longer loosing weight) I finished turning a couple and finished them with the usual shellac/wax finish (Crystal Coat). In two days they were sticky. I wiped them down with acetone and sanded down to the bare wood. Applied two coats of polymerized tung oil (Lee Valley). They looked good for nearly a week then the sap mixed with the tung oil and made a wrinkled soft mess over the heartwood. Scraped and sanded to the bare wood, applied two coats of Bull's eye shellac, using 0000 steel wool after each coat was dry. Again used the polymerized tung oil. Same result only it took longer to wrinkle up. Scraped, sanded, acetone then 4 coats of shellac until a slightly glossy finish, then two coats of tung oil. So far this has stayed hard and the grain shows well. The only problem is getting a level coating each time, requiring steel wool to even it up. I would have never fooled with the stuff if it hadn't been for the sentimental value of the tree and folks wanting bowls from it. |
#5
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Turning spruce--followup
On 05/05/2011 04:39 PM, Gerald Ross wrote:
Kevin Miller wrote: snip You should have cooked the bowl to crystallize the sap... My microwave is too small. :) Nah, no microwaves - we're talking slow roast here. 350 degrees for a half hour in the big oven (until tender, season to suit). Just make sure a drip pan is in place! ....Kevin -- Kevin Miller Juneau, Alaska http://www.alaska.net/~atftb "In the history of the world, no one has ever washed a rented car." - Lawrence Summers |
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