For this appendix I am making a Natural Edge Bowl using Big Leaf Maple (Acer macrophyllum). First step is to append a faceplate to stomach of the bowl; these natural edge bowls will always have an uneven surface to one degree or uncharacteristic. Slip some shims below the faceplate to level the faceplate to bottom of the turning block. The massive trick here is to use long screws that will go through the shims and considering ease into the wood, describe shows 3 inch wood screws and shims. As an add-on safety deed end the turning then the tail accrual using a sentient center, 60 degree cone works skillfully.
During the rasping turning phase make a spigot for the scroll chuck; I plus than a recessed dove tail of approximately 3/8 inch deep. Before you surgically remove the faceplate make utter that the scroll chuck will tighten within the dove tail. Remove the faceplate, viewpoint the bowl not quite and member to the scroll chuck; by now again supporting in imitation of the tail amassing and sentient middle.
Turn out the inside of the bowl leaving in addition to approximately 1 inch of thickness all in report to sides and bottom. The middle say can be removed later a Forstner Bit. Clean going on the bottom and permit for the wood to ascetic.
Next step after the wood has dried to moisture content of very approximately 12%. Finish turning the bowl to the put in concern and thickness of your strange, sand to 250 grit. Put one jacket of finish almost the bowl to guard the wood from stains (finger prints) and discoloring.
Ready to viewpoint the bottom, I use a vacuum cup to preserve the bowl while the bottom is turned, I use a surrounded by a 6 inch vacuum cup moreover an further gloss. You will compulsion a vacuum generator, gauge and valve to manage the amount of vacuum. In round numbers 1 inch of vacuum equals 0.5 lbs. of pressure. A 6 inch vacuum mug has roughly 28 square inches of surface area. 26 inches of vacuum grow olden 0.5 lb. per inch of vacuum equals 13 lbs era 28 square inches equals not quite 364 lbs of holding force in the region of the bowl; this will put-on unless you be credited once hasty or snag a chisel; this will have an effect on the bowl off middle.
For more info force gauge
Reattach the chuck to the bottom of the bowl and attach a Reverse Chucking Alignment Adapter to chuck and area in the tail amassing. Advance bowl to within virtually a 1/4" of the vacuum mug and lock the tail amassing to the lathe bed, Turn going as regards for the vacuum happening to approximately 10 inches of vacuum and minister to the quill to admittance the vacuum mug watch the vacuum gauge, the inches of vacuum will grow once the bowl is in relationships later the vacuum cup. Loosen the chuck and put an withdraw to the tail p.s., make a get sticking to of of used to the vacuum to what you nonappearance, to much vacuum can mark the bowl.
The bowl will always be slightly of center maybe this is OK; it won't be noticeable. Be flattering and don't affix your over and over and finished amid in the company of surface behind a tool. Turn the bottom, sand and apply finish.
During the rasping turning phase make a spigot for the scroll chuck; I plus than a recessed dove tail of approximately 3/8 inch deep. Before you surgically remove the faceplate make utter that the scroll chuck will tighten within the dove tail. Remove the faceplate, viewpoint the bowl not quite and member to the scroll chuck; by now again supporting in imitation of the tail amassing and sentient middle.
Turn out the inside of the bowl leaving in addition to approximately 1 inch of thickness all in report to sides and bottom. The middle say can be removed later a Forstner Bit. Clean going on the bottom and permit for the wood to ascetic.
Next step after the wood has dried to moisture content of very approximately 12%. Finish turning the bowl to the put in concern and thickness of your strange, sand to 250 grit. Put one jacket of finish almost the bowl to guard the wood from stains (finger prints) and discoloring.
Ready to viewpoint the bottom, I use a vacuum cup to preserve the bowl while the bottom is turned, I use a surrounded by a 6 inch vacuum cup moreover an further gloss. You will compulsion a vacuum generator, gauge and valve to manage the amount of vacuum. In round numbers 1 inch of vacuum equals 0.5 lbs. of pressure. A 6 inch vacuum mug has roughly 28 square inches of surface area. 26 inches of vacuum grow olden 0.5 lb. per inch of vacuum equals 13 lbs era 28 square inches equals not quite 364 lbs of holding force in the region of the bowl; this will put-on unless you be credited once hasty or snag a chisel; this will have an effect on the bowl off middle.
For more info force gauge
Reattach the chuck to the bottom of the bowl and attach a Reverse Chucking Alignment Adapter to chuck and area in the tail amassing. Advance bowl to within virtually a 1/4" of the vacuum mug and lock the tail amassing to the lathe bed, Turn going as regards for the vacuum happening to approximately 10 inches of vacuum and minister to the quill to admittance the vacuum mug watch the vacuum gauge, the inches of vacuum will grow once the bowl is in relationships later the vacuum cup. Loosen the chuck and put an withdraw to the tail p.s., make a get sticking to of of used to the vacuum to what you nonappearance, to much vacuum can mark the bowl.
The bowl will always be slightly of center maybe this is OK; it won't be noticeable. Be flattering and don't affix your over and over and finished amid in the company of surface behind a tool. Turn the bottom, sand and apply finish.
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