I struggle to use a similar device to cut small circles (BT-20 size, for instance) in thick cardboard/wood fiber material. For me, the biggest problem is the plastic bending during the circle cut resulting in a circle that's smaller (usually) than what it should be.I have this thing, but it struggles when I try to cut really small diameter holes, such as BT-20 and BT-5 sized holes in this dense cardboard.
I have this thing, but it struggles when I try to cut really small diameter holes, such as BT-20 and BT-5 sized holes in this dense cardboard.
It seems most people, including me, like the standard #11 hobby knife blade for most tasks. What are those other blades used for?
What are those other blades used for?
I bought one of these... haven't had a need to try it yet... it was only $7
NT Cutter Compass Circle Cutter, 13/16 Inches ~ 5-7/8 Inches Diameter, 1 Cutter (C-400P)
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Looks nice! Looks like is is limited to cutting holes that are at least 13/16 inches in diameter. :-(. That won’t work for my current purpose, but could work in the future.
This looks nice but I need to cut holes as small as BT-5 and BT-20 size. BT-20 is .736 inches in outside diameter. Too small! :-(I've never tried it, but I were serious about cutting clean circles in cardboard, I think I'd go with this:
https://olfa.com/products/olfa-cmp-3-rotary-circle-cutter?_pos=1&_sid=0066379ad&_ss=r
Because it has a circular blade, like a pizza cutter.
Unless you need smaller circles.
A hollow punch set might help if you can find one with the right ID for thr discs you want. These work well on chipboard and thin wood stock.This looks nice but I need to cut holes as small as BT-5 and BT-20 size. BT-20 is .736 inches in outside diameter. Too small! :-(
It is hard to cut through thick cardboard. I tried making some rings last year starting with some cardboard that I had glued together to make it thicker. It took many passes and by the time I had cut all the way through the edges were somewhat frayed. I actually cut most of the way through one side then turned it over and cut the rest of the way through from that side.I have had trouble cutting a nice, round circle
Nice cutter for BT60 inner to bigger BT centering rings but its minimum diameter circle it can cut is 1.5"I've never tried it, but I were serious about cutting clean circles in cardboard, I think I'd go with this:
https://olfa.com/products/olfa-cmp-3-rotary-circle-cutter?_pos=1&_sid=0066379ad&_ss=r
Because it has a circular blade, like a pizza cutter.
Unless you need smaller circles.
I wish there were bigger punches in the set. Only goes up to 1/2 inch.A hollow punch set might help if you can find one with the right ID for thr discs you want. These work well on chipboard and thin wood stock.
https://www.harborfreight.com/9-piece-hollow-punch-set-3838.html
Where do I get said large circle leather punch?Kind of expensive, but large circle leather punches works magic on cardboard up to 1/4" thick.
Might want to consider a scroll saw. A lot faster and dense cardboard can be almost as tough as light ply when using a knife.I have had trouble cutting a nice, round circle, even with a template, when using a standard straight hobby knife blade. I have some weird curved blades, as well as some “chisel” type blades, but never use them. Is one of them good for cutting circles in dense cardboard?
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Any Leather Supply Company. Tandy, Weaver, Springfield, C.S. Osborne. General Tools makes a set for about $75 on Amazon. If I ever have the money I'll be buying one. If you don't know how to polish so they don't stick, check out Springfield Leather Company's You Tube Page for their video on sharpening. I think it's a must see for everyone because it address everything from an X-Acto blade to Kitchen Knives.Where do I get said large circle leather punch?
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