Karri - Eucalyptus diversicolor. Pros and Cons?
What are your thoughts on karri for woodwork?
Pros and cons?
First of all I am going to list its latin name as pro - Eucalyptus diversicolor. This is a species name that not only I can pronounce but I can remember! There is a first for everything! And diversicolor it is.
I discovered it basically by accident. I went to buy some merbau as a cheap alternative to mahogany. I saw some karri decking and I liked the colour of it. I bought it, not knowing anything about it. The colour and colour variations have only grown on me since.
The bits I bought were naturally quite straight, clear and free of gum veins etc. (I picked out the darker, straighter ones.) So I have the impression that this is normal. Perhaps you can enlighen me? Being decking timber it is relatively cheap and easy to source.
I bought the decking and dressed it but since I picked out only straight lengths from the pile it didn't need much taken off to be straight and flat. It seems to be naturally a tall straight tree with straight grain to me. Is that right?
It is very heavy which I'm going to list as a con for woodwork projects. Although that could be a pro when used for a base for something.
It is also very hard and doesn't really seem to compress at all. This could be a pro or a con I guess. I found it helped me get tight joints but it also meant a long time to work it with hand tools. When I pushed it too far it failed without warning. I'd say that was all down to my inexperience with hardwood in general and not a reflection of the timber species.
The reason it is used for decking is that it is very strong. I'm going to list that as pro for woodwork, but I guess great strength is often not so important for most woodwork projects.
I am not aware of a high silica content in karri - perhaps you can educate me on that? I found it machined well. I guess being hard there would be some extra wear, but I'm a weekend hobbist, so what me worry?
All in all, I like it and I feel it is an underrated timber. Although perhaps I am simply too inexperienced to know any better. Why isn't it used by woodworkers more often?
I made two standing lamps for the lounge.
Attachment 473912
I also made two videos on how I built them.
You can see part 1 here: YouTube
Part 2 will be released this Friday here: YouTube
I also dressed and thined some more of it for another project but then I changed my mind and dropped that project altogether. So I still have a little ready, waiting in the shed for the right project to come along.
I'd be really interested to learn your thoughts.