Ask Dale
Ask Dale is a regular column featured in Woodturning Design. Listed below are the questions and Dale's answers from Issue 34.
Can I safely use a cabinet scraper that is made for use on flat work on a bowl to remove tool marks and to lessen sanding?
Yes, a number of turners I know use a hand scraper on the outside of bowls or hollowforms. They use the blade only in a shear-scraping mode. The scraper cuts at an angle and takes a tissue-paper thickness of shaving off the curved exterior of the turning. Do not try to shear-scrape on the inside of a bowl with a hand scraper, because the blade may catch and cause a serious accident, cutting your hand and possibly ruining the bowl.
I just finished watching Mike Mahoney’s Heirloom video. Do you have any idea about what are the oldest known wooden bowl and drinking cup? Where were they made and how? Did they have a finish, and if so, what was used? What was used to seal the pores of the wood? Do you know if there are any books or articles discussing old wooden tableware?

No one knows which are the oldest wooden bowl or drinking cup. I understand wooden objects have been found in tombs in the pyramids, and it is well known that wooden bowls and drinking cups dating back to the fourteenth century are in museums in England. One of the oldest drinking cups was found in a peat bog in Ireland, but the year in which it was made is unknown. The early turned bowls and cups were turned on pole lathes of various sorts and were made from hard, dense woods, such as fruitwood, maple, cherry, sycamore, pear wood, beech, or walnut.

Some bowls were made from lignum vitae and often contained a large quantity of hot liquid, so it was essential that the containers were made from wood that was extremely durable and dense grained. Lignum contains a natural oil and would not need a finish. The only finishes available were natural oils, beeswax, or fats, and any finish such as this would have long since disappeared.

There have been several books written on this subject and they are available in the library. Of special note are Domestic Utensils of Wood by Owen Evan-Thomas and Treen and Other Wooden By-Gones by Edward Pinto. A collection of some 3000 objects in the Pinto Collection has been acquired by the Birmingham City Museum and Art Gallery.

I was lucky enough to receive a load of redwood slabs last year. This wood is bone, bone dry—I believe it is 100+ years old, and has sat, stored on a pallet, for years and years in the basement of an old, old house. To say that it has been difficult to turn and get a good cut without tearout is an understatement! I’m looking for any suggestions on how to get some moisture, or “stiffness,” back into the wood to make for easier turning and to lessen tearout. I was thinking about maybe mixing up a batch of super-thin shellac and drowning it in that, but I don’t know whether the shellac would penetrate the wood, or if I would be just giving the wood an alcohol bath. Do you have any suggestions on how to salvage this wood?

Many of the old-growth redwoods are hundreds of years old. The wood is frequently salvaged from old logging stumps and can be turned without difficulty. Your wood has been stored in a basement without heat, so it should have a moisture content of 6% to 10%, depending on where you live; therefore, the moisture in the wood should be adequate for successful turning.

If your gouges are very sharp and used in a shearing mode, the wood should be able to be cut cleanly and with a smooth surface. Saturating the surface of a piece of wood that has been turned to rough shape with shellac, thin lacquer, or thin CA glue will firm the surface, so that a smooth cut, free from tearout, can be made. However, the secret to successfully turning this type of wood is sharp tools and shearing cuts.

My brother is a carver and I would like to turn a mallet for him. What woods would you recommend for turning one? Should the mallet be made of solid wood or can I laminate it; if so, what kind of glue would you recommend? Is there a preferred way to attach the handle? 

Woodcarving mallets need to be turned from the hardest wood that is available. The mallet head could be turned from osage orange, hop hornbean, or black locust. The head should be straight-grained and free from knots or other defects. The handle could be turned from other hardwoods, such as hard maple, black or honey locust, walnut, or any other good hardwood. Drill the mallet to accept the handle and you should have an heirloom mallet to present your brother.

I’d like to ask a question about the lathe tailstock. Is it okay to use it extended? For example, I got into the habit of having it partially extended when turning “between centers.” My tailstock extends about 3" total, and I usually have it extended from 1" to 1-1/2". Is this okay or does it put too much undue stress on the tailstock shaft? If so, should I keep it retracted whenever possible? Is there a “rule of thumb” that I should be following for this part of the lathe?
I extend the lathe tailstock up to one-third of the contact area of the lathe. Often this extra length between centers will allow you to turn spindles a little longer than the regular distance between centers. The tailstock quill should be retracted as much as possible and the tailstock should be extended over the bed no farther than necessary.

I would not extend the tailstock more than half the contact area and only if the setup seems solid and secure.

I’ve seen bowl gouges advertised with both “V”- and “U”-shaped flutes; is there any difference in the way they cut? Do you have a preference?

There is definitely a difference between the way that the V- and U-shaped flutes cut. Most turners prefer the U-shaped flutes, because they clear the shavings more easily and can be used with a square-across grind or with the wings ground back to create a fingernail shape. Ray Key makes aggressive roughing cuts with a gouge with the wings ground back and refining cuts with the square-across grind, particularly on flat work, shallow gentle curve bowls, and flatter-sectioned deep bowls.

The V-shaped gouges must be ground with the wings ground back to cut efficiently and clear the shavings from the V-shape. I prefer the U-shaped flute, because it is more versatile and can be ground to perform several functions.

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