The Forestry Forum is sponsored in part by:

iDRY Vacuum Kilns


Forestry Forum
Sponsored by:


TimberKing Sawmills



Toll Free 1-800-582-0470

LogRite Tools



Norwood Industries Inc.




Your source for Portable Sawmills, Edgers, Resaws, Sharpeners, Setters, Bandsaw Blades and Sawmill Parts

EZ Boardwalk Sawmills. More Saw For Less Money!

STIHLDealers.com sponsored by Northeast STIHL


Woodland Sawmills

Peterson Swingmills

 KASCO SharpTech WoodMaxx Blades

Turbosawmill

Sawmill Exchange

Michigan Firewood, your BRUTE FORCE Authorized Dealer

FARMA


Baker Products

ECHO-Bearcat

iDRY Wood Lumber Vacuum Drying for everyon

Nyle Kiln Dry Systems

Tally-I/O




Author Topic: Temperature & Time to Kill critters & Eggs?  (Read 3707 times)

0 Members and 1 Guest are viewing this topic.

Offline abosely

  • member
  • *
  • Posts: 17
  • Location: Ocean View, Big Island Hawaii 2350 ft ASL
  • Gender: Male
    • Share Post
Temperature & Time to Kill critters & Eggs?
« on: July 30, 2015, 05:44:49 PM »
At what temperature and for how long should lumber be kilned to kill bugs, eggs & fungus? Not for drying purposes, but just for 'sterilizing'.

I'm guessing there may be some variables such as at X temp, X length of time and at Y temp, Y length of time?

Cheers, Allen   

Offline WDH

  • Forester
  • Administrator
  • *****
  • Posts: 29294
  • Age: 65
  • Location: Perry, GA
  • Gender: Male
  • April 1998 - August 2008
    • Share Post
    • hamsleyhardwood.com
Re: Temperature & Time to Kill critters & Eggs?
« Reply #1 on: July 30, 2015, 09:51:14 PM »
Several hours at an internal wood temp of about 135.  That is internal wood temp, not air temp.  I usually sterilize at 150 degrees air temp for 24 hours.  This should allow the wood to reach an internal temp of over 130 degrees for at least several hours. 
Woodmizer LT40HDD35, John Deere 2155, Kubota M5640SU, Nyle L53 Dehumidification Kiln, and a passion for all things with leafs, twigs, and bark.  hamsleyhardwood.com

Offline YellowHammer

  • Senior Member x2
  • *****
  • Posts: 4403
  • Age: 54
  • Location: New Market, Alabama
  • Gender: Male
  • Take Steps to Save Steps
    • Share Post
    • Hobby Hardwood Alabama
Re: Temperature & Time to Kill critters & Eggs?
« Reply #2 on: July 30, 2015, 11:49:08 PM »
When you get it right, and critters will be crispy and broiled to perfection.   8) 8)
 
HobbyHardwoodAlabama.com

Offline LeeB

  • Senior Member x2
  • *****
  • Posts: 8008
  • Age: 60
  • Location: Yellville Arkansas
  • Gender: Male
  • proud to be a TEXAN in Arkansas
    • Share Post
Re: Temperature & Time to Kill critters & Eggs?
« Reply #3 on: July 31, 2015, 08:38:07 AM »
What kind of sauce would you put on them?  musteat_1
'98 LT40HDD/Lombardini, Case 580L, Cat D4C, JD 3032 tractor, JD 5410 tractor, Husky 346, 372 and 562XP's. Stihl MS180 and MS361, 1998 and 2006 3/4 Ton 5.9 Cummins 4x4's, 1989 Dodge D100 w/ 318, and a 1966 Chevy C60 w/ dump bed.

Offline mesquite buckeye

  • Senior Member x2
  • *****
  • Posts: 6103
  • Age: 67
  • Location: Tucson, AZ
  • Gender: Male
  • Trees are good- even ones with stickers
    • Share Post
Re: Temperature & Time to Kill critters & Eggs?
« Reply #4 on: July 31, 2015, 11:50:20 AM »
Something spicy. ;D 8) 8) 8)

Duh :snowball: :snowball: :snowball: :snowball: :snowball:
Manage 80 acre tree farm in central Missouri and Mesquite timber and about a gozillion saguaros in Arizona.

Offline abosely

  • member
  • *
  • Posts: 17
  • Location: Ocean View, Big Island Hawaii 2350 ft ASL
  • Gender: Male
    • Share Post
Re: Temperature & Time to Kill critters & Eggs?
« Reply #5 on: July 31, 2015, 03:22:46 PM »
Thanks WDH, that should be esy enough. The bug killing cycle should be done at end of drying correct?

Franks Red Hot for me! Love the stuff. lol
 
Cheers. Allen

Offline YellowHammer

  • Senior Member x2
  • *****
  • Posts: 4403
  • Age: 54
  • Location: New Market, Alabama
  • Gender: Male
  • Take Steps to Save Steps
    • Share Post
    • Hobby Hardwood Alabama
Re: Temperature & Time to Kill critters & Eggs?
« Reply #6 on: July 31, 2015, 10:31:48 PM »
What kind of sauce would you put on them?

I keep trying to think of something clever but it eludes me.  I mainly just smile and flick their little bug bodies into dust.  I hate bugs in my wood.

Yes, the sterilization cycle commences at the end of the drying cycle


HobbyHardwoodAlabama.com

Offline GeneWengert-WoodDoc

  • Senior Member x2
  • *****
  • Posts: 2721
  • Location: Bishop, GA
  • Gender: Male
  • Author of "Sawing Hardwood Lumber"
    • Share Post
    • Book on Sawing hardwood Lumber
Re: Temperature & Time to Kill critters & Eggs?
« Reply #7 on: July 31, 2015, 11:21:10 PM »
The legal requirement is that the temperature throughout the wood (often called the internal temperature) be 133F, but there is no requirement for time.

Note that to get that hot requires an air temperature of perhaps 150 F or hotter.

The treatment can be done at any time, but the treatment is only effective for that moment in time; that is, it does not carry over to later in the life of the wood.
Gene - Author of articles in Sawmill & Woodlot and books: Drying Hardwood Lumber; VA Tech Solar Kiln; Sawing Edging & Trimming Hardwood Lumber. And more

Offline abosely

  • member
  • *
  • Posts: 17
  • Location: Ocean View, Big Island Hawaii 2350 ft ASL
  • Gender: Male
    • Share Post
Re: Temperature & Time to Kill critters & Eggs?
« Reply #8 on: July 31, 2015, 11:39:55 PM »
Yes, I understand it's like taking an antibiotic, it will (may) kill the sickness now but you can get reinfected right after.

I just want to kill any critters, eggs & fungi that might be in the boards and then will take steps to prevent re 'infection'.

As the lumber is used in the building process it will be completely encapsulated in 4 coats of epoxy.
Plus a lot of the lumber that will only need to be cut to length will be coated in epoxy ahead of time.
That way as I build I'm not trying to put coats of epoxy on wood in the hulls. It's like a thin syrup. Much easier to apply laying on sawhorses! Lol

Lightly sand surface before gluing pieces for bond. Everything gets pre coated before going in hulls. When finished it gets 3 coats of varnish for UV protection.

Cheers, Allen

Offline Kcwoodbutcher

  • Senior Member
  • ****
  • Posts: 573
  • Age: 66
  • Location: Grandview Mo
  • Gender: Male
  • Startin' to get the hang of it
    • Share Post
Re: Temperature & Time to Kill critters & Eggs?
« Reply #9 on: August 01, 2015, 04:10:03 PM »
While that temperature will kill bugs it's not going to kill fungal spores. It would take a much higher temperature, in the neighborhood of 220 to 230, to insure no regrowth of fungus. If the wood stays dry then the fungus won't grow anyway.
My job is to do everything nobody else felt like doing today

Offline flatrock58

  • Senior Member
  • ****
  • Posts: 388
  • Age: 61
  • Location: Carrollton Ga
  • Gender: Male
    • Share Post
Re: Temperature & Time to Kill critters & Eggs?
« Reply #10 on: August 14, 2015, 10:58:21 AM »
I was wondering what kind of heater could be used in a solar kiln to get the temperature up to 150 degf?
2001 LT40 Super Kubota 42
6' extension
resaw attachment
CBN Sharpener
Piney Woods modified Dual tooth setter.

Offline YellowHammer

  • Senior Member x2
  • *****
  • Posts: 4403
  • Age: 54
  • Location: New Market, Alabama
  • Gender: Male
  • Take Steps to Save Steps
    • Share Post
    • Hobby Hardwood Alabama
Re: Temperature & Time to Kill critters & Eggs?
« Reply #11 on: August 14, 2015, 04:17:38 PM »
I've not done it in a solar kiln, but in a well insulated DH kiln with less than strong enough heat strips, I used a total of four 500 kW halogen work lights, $20 each, to generate plenty of heat to get to that temperature.  The work lights are waterproof so they don't corrode, and I assume about as safe a heat source as I could get, except a steam radiator or other type of heat exchanger. 

Lesson learned, do not use an electric space heater, the fan will relatively quickly corrode and stop working and the heater will die. 

I have heard that the naturally convective electric baseboard heaters will work, as they don't have any moving parts, only a heat strip, but I never tried one.
HobbyHardwoodAlabama.com

Offline GeneWengert-WoodDoc

  • Senior Member x2
  • *****
  • Posts: 2721
  • Location: Bishop, GA
  • Gender: Male
  • Author of "Sawing Hardwood Lumber"
    • Share Post
    • Book on Sawing hardwood Lumber
Re: Temperature & Time to Kill critters & Eggs?
« Reply #12 on: August 14, 2015, 11:00:43 PM »
Will the various building materials and hardware withstand 150?
Gene - Author of articles in Sawmill & Woodlot and books: Drying Hardwood Lumber; VA Tech Solar Kiln; Sawing Edging & Trimming Hardwood Lumber. And more


Share via delicious Share via digg Share via facebook Share via linkedin Share via pinterest Share via reddit Share via stumble Share via tumblr Share via twitter

xx
Best drying time, temperature for pecan boards.

Started by richie47 on Drying and Processing

7 Replies
2075 Views
Last post August 04, 2006, 05:56:39 AM
by richie47
xx
Odd critters

Started by tree-farmer on General Board

7 Replies
1456 Views
Last post December 25, 2010, 11:30:39 AM
by DanG
xx
What critters are these?

Started by Riles on General Board

13 Replies
2648 Views
Last post May 03, 2008, 09:36:56 AM
by Greg Cook
xx
Other Critters

Started by Texas Ranger on The Outdoor Board

14 Replies
3012 Views
Last post February 02, 2007, 11:24:58 PM
by jon12345
 


Powered by EzPortal