Thanks Thanks:  0
Likes Likes:  0
Needs Pictures Needs Pictures:  0
Picture(s) thanks Picture(s) thanks:  0
Results 1 to 7 of 7

Thread: Woodworm

  1. #1
    Join Date
    Mar 2017
    Location
    Victoria
    Posts
    73

    Default Woodworm

    I made a bench-seat out of a large cypress log. It's finished and will go to its new owner in a couple of weeks. I've noticed a hole that constantly has little balls of dust? coming out. I presume this is woodworm. If this is the case any suggestions on how to treat it. The wood came from a local small mill in Melbourne South East.

    Thanks
    Attached Images Attached Images

  2. # ADS
    Google Adsense Advertisement
    Join Date
    Always
    Location
    Advertising world
    Posts
    Many





     
  3. #2
    Join Date
    Mar 2018
    Location
    Adl
    Posts
    33

    Default

    I guess heat treatment in a dry kiln is the only option.

  4. #3
    Join Date
    Nov 2012
    Location
    Brisbane
    Posts
    1,734

    Default

    It is pin-hole borer (Lyctid borer). Traditionally such items had to be fumigated to get rid of the borer, which is very dangerous for many timbers. Usually occurs in sapwood of many species, but often not the heartwood. What kind of cypress is it? I thought that Australian Cypress species were resistant to Lyctid borers and to termites. Sometimes it is a sign the timber is green/wet. I recently saw it in an English Elm seat that had been out in the weather.

    I'm not expert on this and advise that you consult your local Forestry office for best practice treatment. It may be possible to kill the borer by saturating the timber with metho snd sealing all surfaces with shellac or one of the penetrating oils (depending on what surface finish you have used.

    I won't allow any timber with Lyctid borer in my house or shed.

    David

  5. #4
    Join Date
    Jul 2005
    Location
    Oberon, NSW
    Age
    60
    Posts
    12,830

    Default

    If it wasn't already finished I'd suggest bagging it for a few weeks with a bowl of ammonia or a suitable fumigant. But Ammonia fuming would significantly darken the colour of the timber.
    I may be weird, but I'm saving up to become eccentric.

    - Andy Mc (AKA "Ghost who posts." )

  6. #5
    Join Date
    Jun 2015
    Location
    Over here.
    Posts
    224

    Default

    Go to your local vet and buy a size 22 syringe needle and plunger, then go and buy yourself some liquid insecticide. Inject the insecticide into the hole. It's more than likely you'll puncture the maggot, but it's also possible that there's more than one in the hole(s)?

  7. #6
    Join Date
    Mar 2017
    Location
    Victoria
    Posts
    73

    Default

    Thanks for the replies.
    A woody mate gave me this stuff which I've been injecting into the holes, seems to be working.

    IMG_8893.jpg

  8. #7
    Join Date
    Nov 2012
    Location
    Brisbane
    Posts
    1,734

    Default

    Well, permethrin. (a synthetic pyrethrin/daisy chemical) will kill most insects but is not necessarily a permanent cure. That class of chemical is, fortunately (but not proven) to be low toxicity to humans. However, it is not persistent. Saturate the timber with shellac or Danish Oil. No insect will take that on.

Similar Threads

  1. Woodworm in an old plane
    By Slothman in forum HAND TOOLS - UNPOWERED
    Replies: 21
    Last Post: 20th May 2019, 11:51 AM
  2. Woodworm Treatment?
    By yvan in forum RESTORATION
    Replies: 2
    Last Post: 8th Nov 2018, 10:23 AM
  3. I do not believe the woodworm story
    By jow104 in forum WOODWORK - GENERAL
    Replies: 14
    Last Post: 13th Sep 2010, 10:25 PM
  4. Disguising woodworm
    By L15a in forum FINISHING
    Replies: 12
    Last Post: 11th Jan 2006, 03:09 PM
  5. Woodworm / Furniture Beetle treatmet?
    By smee in forum WOODWORK - GENERAL
    Replies: 6
    Last Post: 21st Jun 2004, 10:19 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •