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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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Need Help Hollowing!!!
I am in the process of turning a, I think It's red cedar, vase and
would appreciate recomendations on how to hollow it. It is hour glass shaped, 4in on top, 2 in at center and 3 1/2 at the base and is 10in long. I have turned a spigot at the base and it's being held by a OneWay Talon chuck. I have a 5/8 in hole drilled through the top center to the base. I have tried using all of my tools I use for bowl work (small scrapers, small gouges, parting tool) but I can only take micro cuts without risking launching the vase. At that rate of removal, it would take forever to complete. What can I use on this end grain to hollow this sucker out. Your help is appreciated. STEMO |
#2
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Need Help Hollowing!!!
If scraping, narrower scraper to diminish the force on you through the tool.
I'm sure you've seen the "standard" hollowing tools with a narrow scraper in a long bar. If shaving with one of the newer tools like the woodcut which limit shaving thickness, take thin shavings. In either case, clear often and completely lest you wedge the bar/cutter with shavings and dig yourself into the wall. That said, hollowing 8-9" with a 1/2" bar is going to pose a challenge for anyone. My advice, start with hollowing wider openings and shallower depths. Walk before you run. As I've mentioned, I like to bore and hollow initially with pointed gouges, because with a mild nose-up shear, the shavings run down the flute and don't jam the tool. The larger area hollowed by the gouge will make either scraping or shaving easier afterward. "Wood Turn It Dont Burn It" wrote in message ... I am in the process of turning a, I think It's red cedar, vase and would appreciate recomendations on how to hollow it. It is hour glass shaped, 4in on top, 2 in at center and 3 1/2 at the base and is 10in long. I have turned a spigot at the base and it's being held by a OneWay Talon chuck. I have a 5/8 in hole drilled through the top center to the base. I have tried using all of my tools I use for bowl work (small scrapers, small gouges, parting tool) but I can only take micro cuts without risking launching the vase. At that rate of removal, it would take forever to complete. What can I use on this end grain to hollow this sucker out. Your help is appreciated. STEMO |
#3
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Need Help Hollowing!!!
You may need to be using #3 jaws on your chuck for this deep a vase. A
steady rest would also be a great idea. A faceplate with glue block would hold your vase more solidly. An endgrain cutter like a hook tool or Oneway Termite would be good for hollowing. Your typical tools probably won't work for this vase unless you have some incredible technique. Also, you need to have a handle that is at least 50% longer than the one on your bowl gouge to be safely cutting so far over the toolrest. Time to buy a hollowing tool set or make shallower vases 8" tall or under. Derek |
#4
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Need Help Hollowing!!!
Woodcut have a video on hollowing free of charge if you want it (send your
address) also check out my site for hollowing tool products www.woodcut-tools.com Ken "Wood Turn It Dont Burn It" wrote in message ... I am in the process of turning a, I think It's red cedar, vase and would appreciate recomendations on how to hollow it. It is hour glass shaped, 4in on top, 2 in at center and 3 1/2 at the base and is 10in long. I have turned a spigot at the base and it's being held by a OneWay Talon chuck. I have a 5/8 in hole drilled through the top center to the base. I have tried using all of my tools I use for bowl work (small scrapers, small gouges, parting tool) but I can only take micro cuts without risking launching the vase. At that rate of removal, it would take forever to complete. What can I use on this end grain to hollow this sucker out. Your help is appreciated. STEMO |
#5
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Need Help Hollowing!!!
This begs the use of a faceplate held on with six or eight substantial
screws (min #10x1", better #12x1 1/2" if you have the wood to spare on the base). The problem is not so much the holding power of the check but the integrity of the wood. You are engaging maybe 1/32" of wood across two inches to hold against leverage that is maybe 8 or 10 inches away (consider the engagement on only one side of the jaws, the other side is the pivot point). The wood is probable giving away or compressing and sliding through. It is true that larger jaws will improve your odds but faceplates are cheaper and quite handy to have around. Also recognize that the leverage you are exerting on the chuck's hold is not so much based on the diameter, but moreso the distance you are from the chuck. (this may or may not translate for you) This length---------- _____________________ | | spindle | | |_____________________| versus ^ | this jaw diameter is the lever factor to consider. Your scraper may easily have a 5:1 advantage over the chuck. How thin of a slice must you take not to overpower that 1/32" engagement? Sure, you have more wood engaged in the chuck than with the scraper, but the chuck must win the contest 100.0% of the time. Any single instant where the scraper wins and you are chasing lumber around the shop. Good luck, and try a face plate, David -- http://www.wademade.net Wood Turn It Dont Burn It wrote: I am in the process of turning a, I think It's red cedar, vase and would appreciate recomendations on how to hollow it. It is hour glass shaped, 4in on top, 2 in at center and 3 1/2 at the base and is 10in long. I have turned a spigot at the base and it's being held by a OneWay Talon chuck. I have a 5/8 in hole drilled through the top center to the base. I have tried using all of my tools I use for bowl work (small scrapers, small gouges, parting tool) but I can only take micro cuts without risking launching the vase. At that rate of removal, it would take forever to complete. What can I use on this end grain to hollow this sucker out. Your help is appreciated. STEMO |
#6
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Need Help Hollowing!!!
Totally none applicable to the question, but I do have a counter-question as
to design? The base will be smaller in diameter than the top???? I am not an artiste, but in my own small, provincial way would not try a design like that, but then again, I never did care for Picasso! *G* Leif "Wood Turn It Dont Burn It" wrote in message ... I am in the process of turning a, I think It's red cedar, vase and would appreciate recomendations on how to hollow it. It is hour glass shaped, 4in on top, 2 in at center and 3 1/2 at the base and is 10in long. I have turned a spigot at the base and it's being held by a OneWay Talon chuck. I have a 5/8 in hole drilled through the top center to the base. I have tried using all of my tools I use for bowl work (small scrapers, small gouges, parting tool) but I can only take micro cuts without risking launching the vase. At that rate of removal, it would take forever to complete. What can I use on this end grain to hollow this sucker out. Your help is appreciated. STEMO |
#7
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Need Help Hollowing!!!
I would like to thank you all for your input on this and yeah I think
the face plate is the way to go. And yes Leif, I also questioned the top dimension being larger than the base and what the SHMBO wants is what I'll she'll get. Thanks again. STEMO |
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