Yes, exactly this. Cut along the aluminum angle and it's really not difficult, at least for cardboard tubes.I'll then use the angle aluminum to ensure a straight edge for guiding my X-acto knife (using a new blade) in making several light passes to cut the body tube.
Ok, probably not going to help at all, but if I had to do that today I would 3D print a slot guide and a backer for the tube....
A lot of folks don't think the gold exacto blades are worth the money but for stuff like cutting slots they are money. Instructions for King Kraken said to use a new blade for each tube fin. I used one goldy for all four fins and am still using it months later.Measure twice, cut once. New blade in your exacto.
No one ever said "I wish my blade was dull", unless of course, they've just cut themselves.
Tony
Well, not to belabor the point, but actually, you are more likely to cut yourself with a dull blade (for the reason you described), but the cut with a sharp knife can be much worse. A sharp blade can cut you much more easily and deeply with lighter pressure or an accidental brush with the blade, and worse, you may not notice because the cut is so clean. I have a fair collection of knives and can tell you that just during general handling the super sharp ones are far scarier than the dull ones. I was at a gun show once and watched a guy sharpen a hunting knife with a very high end sharpener (I think it was a Wicked Edge). Before he gave the knife back to the guy, he told him "do not test it with your thumb, you will cut yourself". Of course, the guy gets the knife, runs his thumb along the edge, and says he can't feel it. The knife sharpener hands him a paper towel and the guy looked confused. He was already bleeding and did not realize it yet.I was always taught that a dull blade is much more likely to cut you than a sharp one. If your blade is sharp, you're much less likely to bear down too hard on it, causing it to resist until finally giving way unexpectedly. A sharp blade cuts with minimal pressure and you're more in control than with a dull blade.
At least, that's what I was taught.
I don’t know about that haha. The setup time and trouble hardly seems worth it.A mill with a rotary head makes life easy. I
So, you mean put a coupler in the tube where you are going to cut the slots?use a backer - either a spare coupler or some other tube to support the body tube from underneath the cut
That, make it slightly “bigger/smaller” than necessary then sand for perfect fit works in a lot of situationsMark your slot cut lines slightly narrower than the fin thickness and sand to fit.
Yup.So, you mean put a coupler in the tube where you are going to cut the slots?
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