This month Leon displayed and instructed multiple methods for offset turning.
One of the most important things to learn and to turn well made off center pieces is to understand centers and axes (plural of axis).
Off center pieces can be made turning between centers or using tenons and chucks.
Marking the pieces with pencil or marker is extremely helpful. Markings are made along the length of the wood as well as each end. Centers are punched and numbered so as to not lose place of where the centers are to be placed.
Care must be taken whenever turning off center. Ensure that your piece is secured and that you have have adequate clearance for your banjo and tool rest!
First time turning off center pieces can be a bit nerve-wracking as it seems that the piece is going to fly off the lathe! Just turn with light cuts with your spindle gouges. Most of the time it may seem like you are not cutting anything - or, as Barbara Dill refers to it as "airwood". Only sporadically will you be actually cutting the piece so a firm handle on your tool and securing your tool on the tool rest can you be sure you and the piece are safe.
Some pieces can be turned by gluing multiple pieces together and using a paper joint that can then be split to reveal pieces like inside out turning or a bowl hidden in a block of wood.
There are only two outcomes of offset turning: Arc or Circular. There are only two ways that the axis can be moved relative to the center axis - parallel or non-parallel (ie twisted) However, there are MANY variables that apply to each quadrant or family of spindles.
The best part of multi-axis turning is that it challenges your mind.
In this month's Tips and Tricks, Leon guides us through collet chucks.
Master Offset Turners and their Pieces
Websites, Tools & Products Discussed
Peter Exton Website: http://www.peterexton.com/peterexton.com/welcome.html
Barbara Dill Website: https://www.barbaradill.com/
David Springett Website: http://www.davidspringett.fws1.com/
Mark Sfirri Website: https://www.marksfirri.com/
Fantastic Demonstration by Barbara Dill on Multi-Axis Turning:
Show and Tell
Members of the club are encouraged to submit photos and a description of the species and design of their work. Please submit these to Aaron Bryan at email@example.com no later than the 20th of each month.
Tips and Tricks
Work Holding, Collet Chucks By Leon Olson
As a machinest, I learned that collets held material more securely with less material than chucks. The same is true for woodturning. Then again, you can only turn relatively small items because of the size of the collet chucks available. I use a ER32 collet chuck for turning finials and even to finish turn the offset Christmas trees. The trees are about 6 to 8 inches high but the blanks are at least 2 inches longer. I used aspen so there is not much weight being held out that far.
The ER32 collet will hold up to 0.787 inches which is 20 mm. Craft supply USA has Beall and Apprentice ER32 collet chucks. The Apprentice uses Tommie bars to tighten the lock nut. Unfortunately, the lock nut is not hardened stell and eventually the Tommie bars will elongate the hole and the bars will slip out so that you cannot tighten the nut safely. Beall uses a spanner wrench which is much more effective. There are ER32 collet chucks on Amazon with a #2 Morse taper that work well. However, you need a set of collets, a wrench and a drawbar. I was able to buy the chucks, collets, wrench and draw bar for about the same price as the Apprentice collet chuck. The club has the same collet chuck I do. You could buy a smaller set of collets than I did and get it for less. The drawbar is 10 mm threaded rod with a wood nut from Home Depot or ACE Hardware. Wood does compress in the ER32 collets and the collets only have a range of 0.015. So, the wood has to fit tight before you tighten the collet.
Beall sells an ER50 collet chuck that will hold up to 1 1/4" in diameter. You can get it at the Beall website. No one else sells a collet chuck as large for woodturning. The collets in the set include 7/8", 1", 1-1/8" and 1-1/4". The ER50 collets have a range of 0.040 inches or 1 mm.
You can make your own collet chuck with a PVC compression fitting. You need to do some modifications to the compression fitting and then you need to make our own wood collets. I also made an egg chuck with a PVC compression fitting. The club has egg chucks for both 1/8 and 1-1/4-8 spindles.
If anyone wants to make their own PVC collet chuck, I would be happy to help you.
If you have questions on this month's Tips & Tricks, email Leon Olson at firstname.lastname@example.org.
Why We Live in Southern Utah
July 2021 Club Attendees - Both in Person and via Zoom
Will Arcularius, Steve Ashworth, Bob Belkowski, Jeff Blonder, Karl Bradshaw, Kim Christopherson, Ernie Daigle, Locke Ettinger, Les Gray, Barry Gray, Jack Gunn, Grant Johnson, Pete Kaup, Jerry Keller, Dave Layton, Sean Lovell, George Mason, Karl Mcmullin, Leon Olson, Glenn Pearson, Jim Pope, Ken Ragsdale, Jim Rockford, Brent Ross, Mark Shelton, John Spevak, Jack Twelves, Bill Vincent, Eric Walker, Chuck Zimmerman
Items for Sale by Members
Please submit items for sale to Aaron Bryan (email@example.com) before the 20th of the month to be included in the newsletter. If you have sold an item listed in the newsletter, please notify Aaron so he can remove it.
For Sale by Will Arcularius, 805-712-2174, firstname.lastname@example.org
1) Makita Compound Sliding Miter Saw, 12", Model LS1214FL. Excellent Condition. Price: $345
2) Robert Sorby Thread Cutting System. Never Used. Have both the 16 TPI and 20 TPI cutters. See page 20 in Craft Supply Catalog. Sells for $129.95 - Will take $85.
For Sale by Bob Hansen, 928-347-5718, Nova Mercury Variable Speed Mini Lathe with bed extension, 1/2 HP, 8" swing over bed; 14" swing outboard. $300. For more info contact Bob directly.