Tonewood and wood-boring beetles (Full Version)

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kominak -> Tonewood and wood-boring beetles (Sep. 10 2015 10:51:49)

Hello,
yesterday I was processing some walnut slabs which turned out to have quite a big worms in it - something like this.

I was working in my shop where I store my tonewood, too. I cleaned the shop as good as I could, but of course the walnut dust is everywhere now - is it possible that the small dust particles also contain small worm eggs and my tonewood will get infected? How can I avoid this?

Thanks a lot for any help - I don't have much tonewood stored but I'd be sorry to loose it all the same...

Martin




Wayne Brown -> RE: Tonewood and wood-boring beetles (Sep. 10 2015 13:32:57)

Wood borers love walnut! They got into my stash of walnut and I am thinking that eggs were already in the wood when I brought it into the shop.

I marked all the holes with white pencil and then sprayed the wood and the shop with an insecticide. afterwards, I watched to see if any new holes appeared ( they did not).

I would dispose of the dust and any shavings.
You can always fill the holes!




Dudnote -> RE: Tonewood and wood-boring beetles (Sep. 11 2015 1:14:38)

quote:

ORIGINAL: Wayne Brown
You can always fill the holes!

Or just add an extra sound port or two on your next guitar, they're all the rage. [:D]

Joking aside, hope you manage to clear them out, sounds like a night mare. Every now and then we have to ditch my rough and ready home made bamboo furniture because termites seem to like it more than we do.




jshelton5040 -> RE: Tonewood and wood-boring beetles (Sep. 11 2015 2:05:51)

I spent several summers harvesting spruce trees and resawing them for guitar, violin and cello topwood. After a couple of disastrous sales to violin makers who discovered boring insects in the tops I sold them I realized that the bark must be removed since the insects live between the bark and the usable wood. I don't know if it's the same with other trees but that's the way it was with Engelmann spruce.




estebanana -> RE: Tonewood and wood-boring beetles (Sep. 11 2015 3:30:46)

Termites and worms are two different problems...sort it out before you treat.




kominak -> RE: Tonewood and wood-boring beetles (Sep. 11 2015 10:31:12)

Thanks a lot, guys. I will clear the dust best as be possible and treat the wood with some aniti-worm chemical (it's definitely worms and not termites), hopefully local shop will be helpful...




Ruphus -> RE: Tonewood and wood-boring beetles (Sep. 11 2015 13:06:26)

Only sent through G-translator, but I think it should be understandable.
quote:

The woodworm

In woodworm is to have no real worms. Actually, these are mostly the wood-eating larvae of the ordinary gnawing beetle (lat. Anobium Punctatum).

They eat the cellulose in the early wood and destroy out so expensive furniture and supporting construction wood from the inside.

In the choice of wood, the larvae are undemanding. They attack not only fresh timber, but also centuries-old wood parts.
Did you know already….
The common furniture beetle is also known as "death-watch beetle" because it suggests in the mating season with his head on the wood to attract sexual partners. Previously it was thought that knocking would announce the approaching death.



The mother beetle lays laying eggs between 20 and 50 eggs in small cracks and openings in the timber. Often even in the same piece of wood, in which she is self-grown.

The development of the larvae may, depending on their condition, be between 1 and 8 years. It depends on the temperature, the moisture and the protein content of the wood on.

Between April and August, the larvae pupate and eat up to the surface. The resulting holes called flying holes which may have a diameter of 1 to 3 mm.

How to Spot the infestation


An active woodworm infestation can be recognized by small sawdust pile under the component or furniture. When eating they are transported out of the timber.

By temperature changes and other influences, it may happen that the larva inserts a feeding pause and during this period no ejects wood flour. Thereby, it is sometimes not easy to detect an infestation.

Wolverine noise can be another clue that indicates the wood pests.

The control methods

To combat woodworm some methods have evolved over the centuries. Some of them are very effective, while others delusion. Let's look at each method in more detail at:

Thermal treatment

Woodworm exist, like most insects, to a large extent from protein. And as everyone has noticed with a tasty scrambled eggs ever, the gelatinous protein above a certain temperature is determined. This circumstance you can take advantage of even when the woodworm and heat the wood.

Above a temperature of 55 ° C, the protein starts to coagulate in the larvae, making them die. Here, since the timber must be heated up to the innermost layer, it should be exposed to this temperature for about 1 hour.

The wood moisture should be noted, as tends to dry wood cracks.

There are several ways to heat the piece of furniture when it is portable:

Smaller pieces of wood can be wonderfully heated to the required temperature in the oven or a microwave device.

Larger pieces of furniture can also be heated in a sauna.

If no sauna are prepared and the furniture too large for the oven, you can build its woodworm sauna in the summer itself. For this purpose, one discovers the wood from a black tarpaulin, most airtight. By sunlight, the temperature rises under the tarp to dramatically and achieved so loose the required 55 ° C. To check a thermometer can be used.

In summer, the interior of cars often developed a high temperature. This one can take advantage of and store the piece of furniture for several hours in it.

Since the animals are adapted to the low temperatures in winter, the freezing of the piece of wood works very poorly. In addition, wood has excellent insulating properties and therefore must be cooled for several hours.


Chemical treatment

In chemical woodworm toxins, such as those found in tree market, a distinction is made between slow-acting poisons ingested and hormone and quick-acting nerve poisons. Since these toxins can be dangerous for people they should only be applied in extreme cases.

Mostly they are injected individually with a thin rod or a syringe into each well. It is imperative gloves and goggles must be worn.

A further possibility is the gassing of the timber parts. However, this procedure should only be performed by a professional, because the chemicals used are toxic for man and environment.


Home remedies

Since the larvae do not like dry wood below 10% wood moisture, often leads the dry heated air in the cold seasons larval death. Therefore, one can an affected piece of furniture for a few months at rest in a heated room and keep the humidity low.
Afflicted wooden posts


An old home remedy for woodworm is the laying out of acorns. The larvae leave the timber and infest the acorns. Once a hole in the shell, it must be replaced. After several weeks, you should be rid of all woodworm.

Other home remedies, such as ammonia, kerosene, turpentine, cedar oil, boric salt, vinegar or lemon have only partly and can also attack the wood surface.

After the woodworm was successfully sold, the resulting holes can be sealed with colored wax or wood putty.


Ruphus




Wayne Brown -> RE: Tonewood and wood-boring beetles (Sep. 11 2015 14:21:37)

There is evidence that Stradivarius used borax to treat his wood. Some theorize that the use of borax may contribute the sound of the Strads. (Just food for thought)




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