Had this idea yesterday and tried it out tonight.
I use the Estes tube cutting guides for everything up to BT60, but don't have the equivalent for BT80, and my previous freehand attempts have been pretty frustrating. So, basing off my vague understanding of how the Kuhn tube cutter works, I rigged up this:
That is an Exacto knife held in a vise. Underneath are a couple of shelves to prop up the tube, and a piece of waxed paper to provide a smooth, non scratching surface.
To use, I held the tube against the blade and rotated it toward me like so:
It actually worked pretty well, especially considering it was my first try with it. I found that, contrary to when I hold the knife in my hand, I could apply quite a bit of pressure and cut the whole tube in about two passes. Here's my result:
Like I said, not bad for my first try. A bit of sanding and it's all cleaned up.
When finished the entire setup is broken down and put away in about 30 seconds. Total cost: $0.
Pretty ghetto, but I'll call it a success.
I use the Estes tube cutting guides for everything up to BT60, but don't have the equivalent for BT80, and my previous freehand attempts have been pretty frustrating. So, basing off my vague understanding of how the Kuhn tube cutter works, I rigged up this:
That is an Exacto knife held in a vise. Underneath are a couple of shelves to prop up the tube, and a piece of waxed paper to provide a smooth, non scratching surface.
To use, I held the tube against the blade and rotated it toward me like so:
It actually worked pretty well, especially considering it was my first try with it. I found that, contrary to when I hold the knife in my hand, I could apply quite a bit of pressure and cut the whole tube in about two passes. Here's my result:
Like I said, not bad for my first try. A bit of sanding and it's all cleaned up.
When finished the entire setup is broken down and put away in about 30 seconds. Total cost: $0.
Pretty ghetto, but I'll call it a success.