I have a makita (6mm shaft) with the T-shaped nibbler. This blows away your tree. I have been carving through 10cm thick trunks in under a minute. I do not have one for the dremel, but would like to get one. I hear it is equally effective there. The nibblers are also available in a long shaft version, which is what I will need for my 50cm diameter olive trunk. I presume the terrier is very similar.
I have put these on my birthday wishlist:
www.bonsai.de/product_info.php?products_id=6009
[3416] Freeskop (7mm/120mm) (#JS001)
www.bonsai.de/product_info.php?products_id=6005
[3413] Freeskop -> 125mm lang
www.bonsai.de/product_info.php?products_id=22479
[3322-B] Jin- und Shari-Tool
www.bonsai.de/product_info.php?products_id=25039
[3324_B] Jin- und Shari-Tool
I have some of these shaped domes, but from Dremel:
www.kaizenbonsai.com/carbide-wood-carvin...rrs-multiple-choices
I have the full round ball sabur tool,
www.kaizenbonsai.com/saburrtooth-wood-ca...fine-grade-6mm-shaft
And then I have a whole range of small drills.
I find you need all types for most projects, as they work differently. One for removing lots of material. Then one for smoothing. And then tools for adding interest & cracks, holes. Unfortunately, I am not good with the tools. So for my big olive I am seriously considering asking a pro. (Or setting a weekend aside, send my wife to her friend for the weekend and just spend LOTS of time, going VERY slow. But guys like harrington, baddely etc are just soo good. Why invent it yourself.
The best deadwoon is however made by finalizing with handtools and letting it mature for a few years before protecting it. I have some trees that I have not used jinseal on, that are now naturally cracked in "squares". Something you can not achieve with manual work.
The wire brushes are really good to get rid of carving traces. But they fall apart easily. Still looking for a solution (Some wax coating mayhaps)