Woodturning Perfect Hollow Sphere No Expensive Jig
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- Опубликовано: 10 сен 2024
- www.AsWoodTurn...
For this project I turn a 2.7" sphere from mesquite using the octagon method. I interrupted the octagon method to split and hollow the sphere. The sphere is finished with beeswax and mineral oil mix.
Important measures for octagon method.
Distance from end of cylinder to nearest octagon corner
Diameter * 0.293
Length of octagon sides
Diameter * 0.414
Cup Centers
Any scrap wood held in a chuck with recess to hold the sphere.
Link to Basic Sphere Video
Woodturning Perfect Spheres - For Wise Turners • Woodturning Perfect Sp...
Penn State Industries #LTCA18
Live Tailstock Chuck Adapter: 1 in. x 8tpi - #2MT Shaft
Beeswax/Mineral Oil Mix
Shred 1/4 pound beeswax into double boiler.
Add 1 pint mineral oil.
Stir occasionally until creamy consistency. Let cool.
Or put in hot attic for two days stirring a couple of times until creamy consistency.
Do not use direct heat on wax. You risk a fire and burns.
Enjoy!
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#sphere #sphereJig #octagonMethod #beeswax #mineralOil #woodworking #woodturning #woodturningprojects #lathe #AlanStratton #video #DIY #spheresfordummies
Alan, Last Christmas my wife decided that she needed some sort of containers to hold Christmas goodies for our grandchildren. I suggested hollow spheres and soon found my self following a procedure identical to the one you used. My big mistake was to make the spheres too thin. This meant that when sanding other than pole to pole, the spheres distorted from circular to elliptical and if I wasn't really careful, I ended up sanding right through the 'thin' side. It took about 11 tries to get the seven spheres needed for our crop of grandchildren. Since then, I have successfully made several more hollow spheres with thicker walls. I have also made a few with the two halves of the sphere threaded together (using a slightly modified version of your threading jig). Getting the grain to line up across the equator is something of a challenge, but not so bad once you work out exactly how to do it.
Keep up the good work. I really enjoy your approach to turning.
Good Job Bruce. Sounds like you have mastered spheres.
Alan
Thanks Alan. Nicely done. I've made a bunch of spheres using a version of your method but not a hollow one. Have to add that to the list.
Sounds like it is time to push your frontier a bit more. :)
Alan
Thanks for sharing Alan👍👍👍👍👍👍👍👍👍😎😎😎
You bet Alan
Alan
I've made a couple of solid spheres using your octagon method, and they turned out amazingly spherical! I'm going to try your hollowing method next time I'm in a wood-turning mood. Thanks for another excellent demo!
Sounds great! That mood is today right?
Alan
Allan hi, I've made a few of these and enjoyed the whole process - then yesterday as I was about to make a template for the inside of a larger one I had a light bulb moment. I start with a piece of wood, turn it into a spindle then put spigots on both ends: if I make one of the spigots a little wide I can slice a piece off and that becomes the template!
Sounds great!
Alan
Another real goodie - thank you
Glad you enjoyed it Richard
Alan
Great ball turning Alan.
Thank you Jack.
Alan
That Awesome and amazing ill be watching again and doing this soon Thx!!!!!!!
It will be worth mastering. :)
Alan
Alan, you sure have mastered the octagon method. I haven't tried it yet. Very nice turning.
Try it. It took me too much time to come upon this method. Makes it easy.
Alan
@@AsWoodTurns I saw where you had a chart for your dimensions for spheres. Think it is back when you turned a ball for your grandson. Is there any possibility of getting a copy of it? Thanks
@@josephwise485 I do not use that chart any more. It was always hiding when I needed it.
The chart was simply a implementations of the two critical formulas noted in the video and the description.
Now that nearly everyone has a smart phone, I recommend.
1. Storing the two numbers in a note on the phone. 0.293 x diameter = distance from end of cylinder to a corner. (top or bottom) and 0.414 x diameter = length of all sides of the octagon.
2. Then use the smart phone calculator to do the two calculations and write the result on the wood.
The chart was limited to discrete diameters. A calculator can do any diameter.
The smart phone is easier to keep track of than a random sheet of paper.
Alan
Really nice. This is the first time I've seen this process done.
For a repeat, search sphere on my channel. :)
Alan
Another nice one Allan.
Thank you Doug
Alan
Nice piece, sAdded to my soon to try list
Great! The sooner the better.
Alan
always enjoy your sphere making process - it's the one I use. Thanks Alan.
It sure beats the jigs. :)
Alan
Neat project, Alan. Great technique. Take care and stay safe.
Bill
Money saving technique also :)
Thank you Bill
Alan
Great Process
It is - at least until you have turned several thousand and have developed a perfect eye for the curve.
Even then.
Alan
Alan, thanks again for another great demo. I have yet to try a sphere but will definitely try your method, of course it will take me a few attempts to get it right.
Have fun! The trick is to not cut too deep.
Alan
@@AsWoodTurns Make my first sphere today following your process. Its not perfect but not bad for first attempt, my biggest issue was centering after rotating the axis. Many thanks for your inspiration to give this a go. I will try again soon.
@@neil_m135 The first rotation is the most problematic depending on how spherical you are beginning with. But you do not have to stop after 3 rotations. One or two (or more) are sometimes required. During each rotation, you are effectively creating a bump on the end while perfecting the middle. When you rotate, make sure that bump is not partially in the cup faceplate area because it will distort the centering. Instead, the bump should be in the new refinement area. The bumps should decrease with each rotation. ideally within three.
Keep at it - you are on the right track.
Alan
I've got a bunch of solid spheres that I wish were hollow. :-) Nice Demo Alan. Thank you for sharing. Have a great Independence day and stay safe.
Well, I have to say it would be difficult to hollow once they are completed as solid. :)
Time for a new bunch.
Alan
Great job!
Thanks! Danny
Alan
Well done Alan, I always enjoy watching your projects.
Thank you Bert. It is time for more of your suggestions. :)
Alan
Great job
Thank you Glenn
Alan
Hi Alan that is superb. I have never turned a sphere but it is on my list of things to try. Take care Alan. Cheers, Huw
Go for it this week!
Alan
Very nice and informative. Thank you for sharing your video.
Glad it was helpful!
Nicely done, Alan (as usual!).
Many thanks! Phil
Alan
That's awesome Alan! Still jealous of the mesquite, I want some so bad. I'll have to check out the linked video explaining the full process, very interesting.
Thanks! 😎
Mesquite is beautiful. Unfortunately, once my stock is gone, I will not be acquiring any more due to allergy
Alan
Nice!
Thanks!
Alan
Nice tips, Thanks Alan!
You are welcome
Alan
Fun project to watch and lovely grain pattern. For the tail stock cup - how do you mount the cup to the large nut that threads onto the live center?
I use a threaded live center. There is a link in the description.
Alan
Any chance you have a cheat sheet for the different diam sphere you make?
I do not use a chart any more. It was always hiding when I needed it. :(
The chart was simply a implementation of the two critical formulas noted in the video and the description.
Now that nearly everyone has a smart phone, I recommend.
1. Storing the two numbers in a note on the phone. 0.293 x diameter = distance from end of cylinder to a corner. (top or bottom) and 0.414 x diameter = length of all sides of the octagon.
2. Then use the smart phone calculator to do the two calculations and write the result on the wood.
The chart was limited to discrete diameters. A calculator can do any diameter.
The smart phone is easier to keep track of than a random sheet of paper. But, if you really want a chart, you are welcome to make one so that it can be hiding when you need it. :)
Alan
Looks nice. What state are you located out of?
I now live in Utah. Thank you
Alan
Always great stuff you make, you make everything look so simple that I want to try it. Do you swap stickers, if you do I would like to swap
After 2 or 3, you will make it look simple too. Sorry, I do not have stickers.
Alan
Godt arbejde
Thank you Frede
Alan