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  1. prestontolbert

    Kilnin' Myshelf

    I would go slower than 540/hr past 1150. You are past quartz, but you have to consider shrinkage, especially with wide flat stuff. Up to 16” pots I’ll go 250°F/hr. 20” to 32” I go 175°F/hr. Over 32” I go 50-75°F/hr. Forced air burners aren’t used because of lack of draw. It’s just a different...
  2. prestontolbert

    Kilnin' Myshelf

    Are you using forced air or venturi burners?
  3. prestontolbert

    Pot with oil spilled on it

    Don't do the wire rack over a fire thing. Any significant heat differential can crack ceramic pots. You can probably put it in the oven safely if you put it in a cold oven and heat it up very slowly. Any amount of water that may have seeped into the cross section of the pot will make it crack or...
  4. prestontolbert

    Kilnin' Myshelf

    Beautiful idea with the internal flue. I would have just cut a hole in the side. How did it fire?
  5. prestontolbert

    Growboxes

    I have made a lot of grow boxes over the years, and the only ones that are still around (not rotten) are made with scrap plastic composite decking. It’s heavy, but lasts forever. I’m a potter, and I finally got around to making ceramic training pots for myself this year.
  6. prestontolbert

    Ashes to ashes....Pots to pots

    It’s been a very long time since I posted here, but I just wanted to say that I have thoroughly enjoyed watching your foray into woodfiring bonsai pots.
  7. prestontolbert

    youtube videos and pots

    I love the rim on that pot!
  8. prestontolbert

    JBP second flush question

    Jean Luc- The reason I had root issues is because I allowed the trees three years growth in the ground with no rootwork. That is fine if the roots are neatly arranged, but like you, I was in a hurry to just get them in the ground. I got fast growth, but many of those trees may never be good...
  9. prestontolbert

    JBP second flush question

    Jason- If you cut trees younger than this, does that mean you cut seedlings? Also I have found that when you cut them this young you get too many buds. It just takes too much work selecting buds later. Being just over in Hickory, you should swing by my little pine plantation in Troutman...
  10. prestontolbert

    JBP second flush question

    I also got pines this year from Ouwinga that look exactly like yours right now. I agree, you have a good game plan. Don't cut any candles on trees this young. Keep in mind that in the next few years you will want to decandle the branches you want to keep. If you let the nice low branching get...
  11. prestontolbert

    3rd National Bonsai Pot Exhibition

    Hello All- I am pleased to announce the upcoming 3rd National Juried Bonsai Pot Exhibition in 2015. This is going to be an awesome show with 60 bonsai pots from the very best bonsai potters in the country. There is an online application available on the NBF website here...
  12. prestontolbert

    Bristlecone pines... Amazing old trees

    I remember that Lindsay Farr had some info on them in one of his shows.
  13. prestontolbert

    Box Store Wound Dressing/Seal

    A prominent bonsai nurseryman told me he uses Titebond II. Titebond I is too permeable and III is too waterproof. Edit:That is on trident maples.
  14. prestontolbert

    The guess that tree thread

    Japanese quince?
  15. prestontolbert

    The guess that tree thread

    Bingo! Parsonii it is.
  16. prestontolbert

    The guess that tree thread

    Cool. Here's one for you.
  17. prestontolbert

    The guess that tree thread

    Juniperus squamata
  18. prestontolbert

    Where to cut my 5 needle??

    Well there you go. Put them in the cooler for 4-5 months and mind the soil moisture. Problem solved. Don't worry about lighting.
  19. prestontolbert

    Pine Specific Soil

    Copied and pasted from Wikipedia: Zeolites are microporous, aluminosilicate minerals commonly used as commercial adsorbents.[1] The term zeolite was originally coined in 1756 by Swedish mineralogist Axel Fredrik Cronstedt, who observed that upon rapidly heating the material stilbite, it...
  20. prestontolbert

    Where to cut my 5 needle??

    My wife is a florist with a large walk in cooler set at 40F. She has some extra space until Valentines. I was thinking about using it for my white pines during the strange fluctuations in temp we have been having. What do you all think? (Edit: Neli- The cost of running a 10'x12' walk in cooler...
  21. prestontolbert

    Where to cut my 5 needle??

    It sounds like you think I disagree with you.
  22. prestontolbert

    Pine Specific Soil

    It sounds like a zeolite product if that helps. It is typically used in filtration.
  23. prestontolbert

    Where to cut my 5 needle??

    As earlier posted, Arthur Joura at the NC Arboretum, though in a cold, snowy, mountainous environment, successfully uses cold storage for the best trees in the collection. This includes pines and junipers with no lighting. He also can control when trees come out of dormancy so he can stage or...
  24. prestontolbert

    Where to cut my 5 needle??

    I didn't realize there were any mugos in Japan. Honestly I wasn't counting needles, I just noticed the white striping along the needles and I knew it wasn't a black or red pine.
  25. prestontolbert

    Where to cut my 5 needle??

    I think we should look again at the back-budding technique Neli was showing. It was indeed a white pine.
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