the all aussie dribble thread!

Arborist Forum

Help Support Arborist Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
As Matt said it does fade to a grey quickly.
But when slabbed,sanded and protected is fantastic.
This is a Redgum slabb just cut with water on it to bring it out,can get fidleback is some as well.

attachment.php

some home work found not much a few boffin papers buried deep in Google but I was not about to read em.

My guess is the red color comes from trace elements of Iron Fe drawn up and laid down into cells and when exposed to light just fades
 
some home work found not much a few boffin papers buried deep in Google but I was not about to read em.

My guess is the red color comes from trace elements of Iron Fe drawn up and laid down into cells and when exposed to light just fades

I dont know

by why would trace minerals only colour heart wood and not the sap wood?
 
I dont know

by why would trace minerals only colour heart wood and not the sap wood?

I'm not sure if it is iron being deposited or not as there are a whole heap of plant compounds such as anthocyanins, tannins etc that can create red colouration in plants.
It's highly unusual for any main micronutrients to accumulate in the heartwood of trees as these are needed in the phloem, xylem etc for plant health. I doubt a plant/tree would store micros in it's heartwood where they're not readily available.
I may even send some Redgum chips off for testing come to think of it just to satisfy my curiosity :D
 
As Matt said it does fade to a grey quickly.
But when slabbed,sanded and protected is fantastic.
This is a Redgum slabb just cut with water on it to bring it out,can get fidleback is some as well.

attachment.php
s


Lovely job mate, hard work that slabbing caper.
Feature slabs, dry with colour cut neatly are worth good money in the right market place.

I have seen murrey red gum 2 inch by 4 / 5 foot natural edge slabs at timber expoes going for $ 400 - $800 each. They looked like red ceda from a distance except for the weight and hardnes of coarse.
Cut from a lucis slabber of coarse.
 
Last edited:
I dont know

by why would trace minerals only colour heart wood and not the sap wood?

agree fe+ was just my guess as the answer did not come easy from google searches. There could be so many reasons for the red colour I was hopin to find & settle it
the why not whatever it is not seen in the sap wood maybe as this is area vascular moving zone so its only laid down/captured in structural dead cell heart wood areas.

Fe+ red rust come from oxidization so this may take time so again chance in heart wood zones


Heck it prolly going to be tannins sap compounds assimilates not related to Fe+ rust and gee if it is and fat Gina R finds out she'll cut em all down ship em to China

I'm going to ask some boffin tree mates see if they know
 
Matt and derwoodii mentioned tannins and Eucs are loaded with the stuff so ??

Bearing in mind my knowledge of biology and plants in particular can be summed up on the back of a postage stamp :D

Hang on, I ran a cattle breeding program on a farm at one stage so I'd worked out something pretty basic............


Naa, who am I kidding.

We've all worked that out by the time we hit puberty........
 
Last edited:
It is with regret that I must inform that the 3120 I have in my possession may be leaving Casa di Rick.


The owner has finally appeared and we appear to have diametrically opposed views on what it's worth.

He seems to be basing an asking price on;

a) it actually runs
b) someone is interested, so the price has gone up from what it was three years ago
c) what a new one is worth here in Oz

I'm basing my offer on;

a) Neil told me what it's worth :D

based on;

a) It's a '96 model and has done a shedload of ripping
b) needs new chain brake handle at a minimum, maybe the entire assembly
c) needs a new kill switch and wiring sorted (have to choke to stop)
d) aux. oiler is jammed/cactus
e) bar stud is loose and falls into oil tank
f) needs new caps
g) needs new air cleaner, air cleaner top cover and seals
h) needs carby gaskets (all are currently home made)
i) needs new AV rubbers
j) basically needs a bloody good going through, maybe a new ring (bore looks OK) and at the end of the season I'd strip and re-furb it anyway.

There were a few other things but can't remember ATM.

Owner reckons it's fine as it runs and cuts and really worth it as a new one is worth $2700 !


We'll see where this ends up but I won't be too disappointed if I have to let it go, at least I still have it here to help finish blocking up the butt section of a tree this weekend :D
 
ah tiki your a figi riddle me this how can energy designs allow or think a fridge cooler with no door is good idea?? surely this is nuts given power costs and planet cooking claims

attachment.php


So i'm guessin the air curtain thingy does it but really a door would be better added up there'd be miles n miles of super market fridge aisles with no doors,,, crazy. Do this at home your power bill would blow as your compressor motor pops to

later I got an fridge energy savin idea could make us millions
 
agree fe+ was just my guess as the answer did not come easy from google searches. There could be so many reasons for the red colour I was hopin to find & settle it
the why not whatever it is not seen in the sap wood maybe as this is area vascular moving zone so its only laid down/captured in structural dead cell heart wood areas.

Fe+ red rust come from oxidization so this may take time so again chance in heart wood zones


Heck it prolly going to be tannins sap compounds assimilates not related to Fe+ rust and gee if it is and fat Gina R finds out she'll cut em all down ship em to China

I'm going to ask some boffin tree mates see if they know


I was not being critical
I was just asking what I thought was the next logical question
As I liked the first question why is it red.

your answer about vascular and non vascular material is surely the answer of why sap and hart wood are different.

mats answer is likely to be part of it also.

some trees make amber, some make latex.

PALM trees like ECO-88
 
Supermarket fridges like that end up air conditioning the shop, the air curtain principle is only so efficient, you lose a reasonable % of cold air outside of the cabinet from mixing with ambient air.

Just take a walk down the dairy display aisle in any supermaket, you damned near need a jumper most of the time.

A customer replaced a 28' open dairy display fridge with a 20' upright closed door job that cost $28,000 two years ago and I think it's paid for itself in power savings now. The new upright display has everything you can use to save power. Special low wattage, super efficient fan motors, special gas mix to reduce heat transfer (not just dry nitrogen) between the double glazing in the doors. (the supplier won't let on what the mix is) Special low wattage mullion heaters (you need the door frames heated to stop condensation) and the insulation is 150mm urethane, better than the spec normally used in a -20*C freezer. Lights are all LED.

I was able to piggy back the existing storage coolroom with the new display cabinet, making redundant a 7.5hp open drive compressor by using the existing (and only three years) dairy case condensing unit. The newer unit is a more efficient hermetic system.
It's still slightly too big to drive both, that's how much cooling the old open case required.

They budgeted on it paying for itself in two to two and half years. The numbers blew me away.

What the shop has to weigh up is the power savings vs stock turnover.

People are too damned lazy to open a door, fact is an open case sells more product than a closed one.
 
Last edited:
ah tiki your a figi riddle me this how can energy designs allow or think a fridge cooler with no door is good idea?? surely this is nuts given power costs and planet cooking claims

attachment.php


So i'm guessin the air curtain thingy does it but really a door would be better added up there'd be miles n miles of super market fridge aisles with no doors,,, crazy. Do this at home your power bill would blow as your compressor motor pops to

later I got an fridge energy savin idea could make us millions

your right you would not do it at home.

the display case keeps the coldest air in the sump of the case same as the open top freezers.
and the metal shelving is kept cool via conduction and thus the food.
conduction through the air is not as efficient.
the escaping cold air is into an air conditioned space so it is not all wasted.
at night time the do put covers on the display cases to save energy.

I have never seen really perishable things like milk in a display case type more small-goods that are not so critical

shops do lots of energy wasting things to promote sales.
the meat section has special lights to change the apparent colour of the meet.

look in a jewelry shop window there are lots of special lamps to make the jewelry bling.
 
Last edited:
Supermarket fridges like that end up air conditioning the shop, the air curtain principle is only so efficient, you lose a reasonable % of cold air outside of the cabinet from mixing with ambient air.

Just take a walk down the dairy display aisle in any supermaket, you damned near need a jumper most of the time.

A customer replaced a 28' open dairy display fridge with a 20' upright closed door job that cost $28,000 two years ago and I think it's paid for itself in power savings now. The new upright display has everything you can use to save power. Special low wattage, super efficient fan motors, special gas mix to reduce heat transfer (not just dry nitrogen) between the double glazing in the doors. (the supplier won't let on what the mix is) Special low wattage mullion heaters (you need the door frames heated to stop condensation) and the insulation is 150mm urethane, better than the spec normally used in a -20*C freezer. Lights are all LED.

I was able to piggy back the existing storage coolroom with the new display cabinet, making redundant a 7.5hp open drive compressor by using the existing (and only three years) dairy case condensing unit. The newer unit is a more efficient hermetic system.
It's still slightly too big to drive both, that's how much cooling the old open case required.

They budgeted on it paying for itself in two to two and half years. The numbers blew me away.

What the shop has to weigh up is the power savings vs stock turnover.

People are too damned lazy to open a door, fact is an open case sells more product than a closed one.

you beat me to it and said it better :)
 
your right you would not do it at home.

the display case keeps the coldest air in the sump of the case same as the open top freezers.
and the metal shelving is kept cool via conduction and thus the food.
conduction through the air is not as efficient.
the escaping cold air is into an air conditioned space so it is not all wasted.
at night time the do put covers on the display cases to save energy.

shops do lots of energy wasting things to promote sales.
the meat section has special lights to change the apparent colour of the meet.

look in a jewelry shop window there are lots of special lamps to make the jewelry bling.

Yep, the night curtains make a big difference to efficiency.

The fluro's used for meat are just plant-lux and bio-lux.
As they emit more red spectrum light it enhances the apparent colour of the meat. If you use a standard fluro meat looks grey.
 
I forgot to add that the $28,000 was just the cabinet price, that didn't include the refrigeration unit or changeover to the existing system.
I did the swap over a weekend, they closed lunchtime one Saturday and re-opened Monday morning and they'd taken all these numbers into account, so with the current price in power you can make huge savings.

This is only a smallish country IGA and yet their power bill is over $12,000/quarter.
You need to turn over a lot of stock to get that back.
 
People are too damned lazy to open a door, fact is an open case sells more product than a closed one.

thats so sad


any hoo a $ idea pay it forward or me later

Can the radiator heat exchanger thingy that sheds off heat back of your fridge be easily plumbed ducted away to be in a cooler or better air movement site eg under the house floor or outside shaded wall so it can cool more efficiently rather than on hot days working motor overtime and heating up my kitchen aswell. seems stupid to cool inside a white box while heating up your house.

so design a heat exchanger that can fitted away from a fridge to reap efficiency of shedding waste heat via lower air temperatures or even better find a way to reuse that waste heat like heat water or ??
 

Latest posts

Back
Top