|
Rowan (aka Mountain Ash) Burl bowl
3 Attachment(s)
Just finished this the other day. It's a Rowan burl that's been slowly
drying in my shop for several years. Long enough that I can't recall where I got it! No matter. Formby's tung oil finish. It's about 12" wide by 3 5/8" tall... Enjoy... ....Kevin -- Kevin Miller - http://www.alaska.net/~atftb Juneau, Alaska In a recent survey, 7 out of 10 hard drives preferred Linux Registered Linux User No: 307357, http://counter.li.org |
Rowan (aka Mountain Ash) Burl bowl
On Mon, 29 Aug 2011 19:44:41 -0800, Kevin Miller
wrote: I never developed much of an interest in turning, but I've always wondered how a burl like that is turned. Specifically, how do you prevent it from cracking and breaking up completely while turning with all the existing cracks and voids? I'm assuming, maybe incorrectly, that there must be some type of violent vibration when a cutting tool crosses a void or a crack. |
Rowan (aka Mountain Ash) Burl bowl
Kevin Miller wrote:
Just finished this the other day. It's a Rowan burl that's been slowly drying in my shop for several years. Long enough that I can't recall where I got it! No matter. Formby's tung oil finish. It's about 12" wide by 3 5/8" tall... Enjoy... ...Kevin Beautiful. But can you eat grits out of this bowl? -- Gerald Ross There, but for the grace of God, goes God.-Winston Churchill |
Rowan (aka Mountain Ash) Burl bowl
On 8/29/2011 10:44 PM, Kevin Miller wrote:
Just finished this the other day. It's a Rowan burl that's been slowly drying in my shop for several years. Long enough that I can't recall where I got it! No matter. Formby's tung oil finish. It's about 12" wide by 3 5/8" tall... Enjoy... ...Kevin Very nice Kevin, good use of wood! |
Rowan (aka Mountain Ash) Burl bowl
On 08/30/2011 12:49 AM, Dave wrote:
On Mon, 29 Aug 2011 19:44:41 -0800, Kevin wrote: I never developed much of an interest in turning, but I've always wondered how a burl like that is turned. Specifically, how do you prevent it from cracking and breaking up completely while turning with all the existing cracks and voids? I'm assuming, maybe incorrectly, that there must be some type of violent vibration when a cutting tool crosses a void or a crack. There is a bit of chatter when crossing voids, but in general it isn't so bad as one might suspect. It depends on several things such as the speed the bowl is spiinning at, how sharp your tools are, what type of cut you're making and how deep of a cut. Even at a slow speed like 500-600 rpm the about of time the tool crosses the void is so minimal that the tool doesn't really have a chance to deviate from the path it's on so when it encounters the far side of the void it hasn't significantly changed the geometry of the cut. Dealing with cracks is an issue at times. I've had wood fly apart on me when the rotational stresses were too much. A full face shield is a must. In this case, by design, I left the walls pretty thick so there was plenty of sound wood to work with so it wasn't a major concern. ....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 |
Rowan (aka Mountain Ash) Burl bowl
On 08/30/2011 02:21 AM, Gerald Ross wrote:
Kevin Miller wrote: Just finished this the other day. It's a Rowan burl that's been slowly drying in my shop for several years. Long enough that I can't recall where I got it! No matter. Formby's tung oil finish. It's about 12" wide by 3 5/8" tall... Enjoy... ...Kevin Beautiful. But can you eat grits out of this bowl? I'm not sure I'd want to eat grits out of any bowl! ;-) ....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 |
Rowan (aka Mountain Ash) Burl bowl
On 08/30/2011 03:40 AM, Leon wrote:
On 8/29/2011 10:44 PM, Kevin Miller wrote: Just finished this the other day. It's a Rowan burl that's been slowly drying in my shop for several years. Long enough that I can't recall where I got it! No matter. Formby's tung oil finish. It's about 12" wide by 3 5/8" tall... Enjoy... ...Kevin Very nice Kevin, good use of wood! Thanks. Now to find more... -- 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 |
Rowan (aka Mountain Ash) Burl bowl
Very beautiful piece. Do you turn it when wet and then let it dry the 2 or
3 year or wait and turn it after it is dry. Very much like a ceramic piece. john "Kevin Miller" wrote in message ... Just finished this the other day. It's a Rowan burl that's been slowly drying in my shop for several years. Long enough that I can't recall where I got it! No matter. Formby's tung oil finish. It's about 12" wide by 3 5/8" tall... Enjoy... ....Kevin -- Kevin Miller - http://www.alaska.net/~atftb Juneau, Alaska In a recent survey, 7 out of 10 hard drives preferred Linux Registered Linux User No: 307357, http://counter.li.org |
Rowan (aka Mountain Ash) Burl bowl
On 08/31/2011 05:44 AM, jloomis wrote:
Very beautiful piece. Do you turn it when wet and then let it dry the 2 or 3 year or wait and turn it after it is dry. Very much like a ceramic piece. It sat in my shop for two or three years before I tried to do anything. I then started roughing it out to be used as a base for a lighthouse but I didn't like how it came out so just set it aside for another couple years. After the moisture level got to a low enough level I finished it up. Usually after roughing I can come back to something w/6 months, but because I'd left this extra thick I wanted to give it a goodly long time to dry... ....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 |
Rowan (aka Mountain Ash) Burl bowl
When you say the moisture level got low enough...How low is ideal???
Keith P |
Rowan (aka Mountain Ash) Burl bowl
On 08/31/2011 12:13 PM, Keith wrote:
When you say the moisture level got low enough...How low is ideal??? Well 6-7% is probably about the best you can do. I think that's what kiln drying takes them down to. Air dried I'm seeing 8%-9%. Since the humidity changes with the seasons, even kiln dried wood will increase in moisture content depending on the season. Usually higher in the summer, lower in the winter. I live in a rain forest, so my EMC (equalibrium moisture content) will never get below 8%, even in the winter. In a place like Arizona that would be high probably. Ideal is an EMC that reflects the location of the piece. Any wood piece will eventually adapt to the local humidity. The trick is to get the wood in the shop as close to that as you can... -- 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 |
| All times are GMT +1. The time now is 07:33 AM. |
Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004 - 2014 DIYbanter