Abused concave cutter

Bonsaifreak

I am guilty of abusing my large concave cutter by merciless trying to do a job for which a saw was probably indicated. I am left with badly misaligned blades which are sharp but do not perform the desired cut. Is there a way to fix this?

Jorge

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"Always acknowledge a fault. This will throw those in authority off their guard and give you an opportunity to commit more."
Mark Twain

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tree bender

What kind are they? I had some cheap ones that did that after a few months. I put them between to pieces of wood and hit gently with a hammer (if there is such a thing) until I got them pretty close to normal. I bought a better quality pair though to replace them.

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Holding pasts in ash black earth
Bound by roots
Roots into sand
Grow towards the giver

Bonsaifreak

That might be part of the problem. These are Fujiyama from Dallas Bonsai. Got them on sale for about $45.

I'm not sure if I understand how you did it. Where do the two pieces of wood go and where do I gently tap with the hammer? Thanks in advance!

Jorge

__________________
"Always acknowledge a fault. This will throw those in authority off their guard and give you an opportunity to commit more."
Mark Twain

tree bender

Hope this explains it. I'm not a BlackSmith but I did stay at a Red Roof in last night.

Attached Images

wood.jpg (62.5 KB, 74 views)

__________________
Holding pasts in ash black earth
Bound by roots
Roots into sand
Grow towards the giver

Bonsaifreak

Nice job explaining it (BTW, t was the Holiday Inn )

Thanks again,

Jorge

__________________
"Always acknowledge a fault. This will throw those in authority off their guard and give you an opportunity to commit more."
Mark Twain

tree bender

I was being fescious... Attempt at humor.

__________________
Holding pasts in ash black earth
Bound by roots
Roots into sand
Grow towards the giver

Jgs bonsai

The best way to align the blades is to slowly file down the stop to allow the blades to come together. Go very slowly because if you remove too much the tool won't work properly and once the stop is gone the tool is no good any longer. This is needed when the tool has been sharpened so much that the blades don't meet as well as the problem to have. If you have used the hammer and they don't fit quite right file the stop until they do. Attached is a modification of tree bender's diagram showing the stop to work on.

Gareth

Attached Images

concave cutter 1.jpg (32.8 KB, 65 views)

Bonsaifreak

Thank you Jgs. My problem is that the blades have a significant gap in between them. I'm affraid that grinding the stop will not change this gap. I'm sorry I don't have a picture to explain it better.

Jorge

__________________
"Always acknowledge a fault. This will throw those in authority off their guard and give you an opportunity to commit more."
Mark Twain

johnbaz

i use my branch cutters for cutting wire when i can't be bothered to find the wire cutters and i got a bollocking off one of our clubs elder members- i deserved it though


john