February 2012
Wood Turners is a
chapter of the AAW.
I would like to begin with a big "Thank You" to Glenn McCullough for the outstanding newsletter he has published the past several months. Because of new responsibilities at work, he is no longer able to publish our newsletter. Also, I would like to Tom Kraehling for his excellent photography. His work greatly contributed to the newsletter. He has taken on other responsibilities at his church and therefore won't be present at many of our functions. Thanks again to both Glenn and Tom. Their contributions will be missed.
Due to these happenings, our newsletter will not be as polished, but it will still appear monthly.
Hope to see everyone at the February meeting
Safety Sam
Safety Sam
After doing some segmented work, I realized I needed a disc sander to improve my glue joints. The commercial sanders I looked at were heavy, and because the sander would sit on my workbench, which is already crowded with too much stuff, I did not want to have to move it to access other equipment. I decided to make a sanding-attachment platform for my lathe.
The disc was easy to make. I mounted medium-density fiberboard (MDF) onto a faceplate, turned it true, coated it with polyurethane and applied a peel-and-stick sanding disc. Now, I needed a platform with a miter channel in the top. I made the platform from birch plywood. The top has a phenolic-coated plywood surface. I coated all of the birch plywood with polyurethane to minimize wood movement.
I attached steel bars to the bottom to mate with the rails of lathe bed. A large bolt with a steel bar on one end and a large wing nut on the other keep the platform in place while in use. It fits the lathe with very little play so I have consistent angles each time.
It was important for the top surface to be square with the disc and for the miter channel to be parallel with the disc. It took a bit of adjusting with shims under the steel bars, but once I got it right and tightened down, it is accurate and angles are repeatable. I check it occasionally to make sure it remains accurate; I have not yet had to make adjustments.
With the addition of a miter jig (commercial or shopmade), I can make accurate segments, which is essential in achieving proper glue joints for segmented work.
This rig has advantages over most commercial disc sanders, which can run too fast for sanding small pieces of wood. My lathe has variable speed, so I can slow down the rotation.
If I needed, I could easily make another disc and attach a different grit, which would allow me to change grits quickly. If the top surface gets too scratched, I can turn over the phenolic-coated plywood or make another surface. The rig is quickly and easily removable from
the lathe and it is light enough to effortlessly carry. I store it indoors where the humidity varies the least. If you have access to metalworking machines, a similar rig with the platform made from aluminum might be better, but I am quite satisfied with this one.
Dorryl Stephison
Woodturners Chatter
Platform Sanding Disc for a Lathe
Most Improved Turner 2011
This year's
"Most Improved Turner"
award goes to Nancy Simons. Nancy has been turning for a little over a year and has turned out some very nice pieces.
Pictured below is some of Nancy's work.
Safe, effective use of a wood lathe requires study and knowledge of procedures for using this tool. Read, thoroughly understand, and follow the label warnings on the lathe and in the owner/operator’s manual. Safety guidelines from an experienced instructor, video or book are also a good source of important safety procedures. Please read the following guidelines carefully.
2. Fine particles from a grinder and wood dust are harmful to your respiratory system. Use a dust mask, air filtration helmet, proper ventilation, dust collection system or a combination of these to deal with this serious issue. Be especially mindful of dust from many exotic woods, spalted woods or any wood from which you notice a skin or respiratory reaction.
3. Wear hearing protection during extended periods of turning time.
4. Turn the lathe “off” before adjusting the tool rest or tool rest base (banjo).
5. Remove chuck keys, adjusting wrenches and knockout bars. Form a habit of checking for these before turning on the lathe.
6. Tie back long hair, do not wear gloves, and avoid loose clothing, jewelry or any dangling objects that may catch on rotating parts or accessories.
7. When using a faceplate, be certain the workpiece is solidly mounted with stout screws (#10 or #12 sheet metal screws as a minimum). Do not use dry wall or deck screws. When turning between centers, be certain the workpiece is firmly mounted between the headstock driving center and tailstock center.
8. Make certain that the belt guard or cover is in place.
9. Check that all locking devices on the tailstock and tool rest assembly (rest and base) are tight before operating the lathe.
10. Make sure the blank is securely fastened.
11. Rotate your workpiece by hand to make sure it clears the toolrest and bed before turning the lathe “on”. Be certain that the workpiece turns freely and is firmly mounted. A handwheel on the headstock simplifies this process of spinning the lathe by hand before turning on the switch.
12. Be aware of what turners call the “red zone” or “firing zone.” This is the area directly behind and in front of the workpiece—the areas most likely for a piece to travel as it comes off the lathe. A good safety habit is to step out of this zone when turning on the lathe, keeping your hand on the switch in case you need to turn the machine off. When observing someone else turn, stay out of this zone.
13. ALWAYS CHECK THE SPEED OF THE LATHE BEFORE TURNING IT ON. Use slower speeds for larger diameters or rough pieces, and higher speeds for smaller diameters and pieces that are balanced. Always start a piece at a slower speed until the workpiece is balanced. If the lathe is shaking or vibrating, lower the speed. If the workpiece vibrates, always stop the machine to check the reason. As a starting point, consult your operator’s manual for recommended speeds for a particular lathe. Make sure the lathe speed is compatible with the size of the blank.
14. Exercise extra caution when using stock with cracks, splits, checks, bark pockets, knots, irregular shapes, or protuberances. Beginners should avoid these types of stock until they have greater knowledge of working such wood.
15. Hold turning tools securely on the toolrest, holding the tool in a controlled but comfortable manner. Always contact the tool rest with the tool before contacting the wood.
16. When running a lathe in reverse, it is possible for a chuck or faceplate to unscrew unless it is securely tightened or locked on the lathe spindle.
17. Know your capabilities and limitations. An experienced woodturner is capable of lathe speeds, techniques and procedures not recommended for beginning turners.
18. Always remove the tool rest before sanding, finishing or polishing operations.
19. Don’t overreach, keep proper footing and balance at all times.
20. Keep lathe in good repair. Check for damaged parts, alignment, binding of moving parts and other conditions that may affect its operation.
21. Keep tools sharp and clean for better and safer performance. Don’t force a dull tool. Don’t use a tool for a purpose it was not designed or intended.
22. Consider your work environment. Don’t use a lathe in damp or wet locations. Do not use in presence of flammable liquids or gases, and always keep a fully-charged fire extinguisher close at hand. Keep your work area well lit.
23. Stay alert. Watch what you are doing, pay close attention to unusual sounds or vibrations - stop the lathe to investigate the cause. Don’t operate machines when you are tired or under the influence of drugs or alcohol.
24. Guard against electric shock. Inspect electric cords for damage. Avoid the use of extension cords.
25. Never leave the lathe running unattended. Turn power off. Don’t leave lathe until it comes to a complete stop.
26. A significant number of accidents to woodturners occur while using saws, especially band and chain saws. Learn and follow the safety guidelines for these machines before operation.
