Warning: You're about to see the stupidest invention that works amazingly well for trimming a tip flush by hand.
Basically, I put together a cutting tool using an OLFA UltraMax LBB blade (really sharp and cheep 6$/10 blades), masking tape and a plastic stir stick (for coffee) to cut tips flush with the ferrule.
Trimming tips with a blade is tricky because of the blade's bevelled edge. You can't lay the blade flat against the ferrule to use the ferrule as a cutting guide because it won't cut flush. You need to come in at angle (consistent with the angle of the bevel). If you come in too steep you cut into the ferrule.
So here it is, tape the stir stick to the non-cutting side of the blade so that half the stir stick is under the blade and half isn't. This raises the butt end of the blade to the perfect angle so that the bevelled cutting edge lays flat with the ferrule. So long as you?re pushing the contraption against the ferrule it should cut straight across and not into your ferrule, which means you can now use the ferrule as a cutting guide. (Don't lose a finger, and test it on something other than your ferrule!)
Here are some pics:
Tool balancing itself on the ferrule (you can see how the bevelled edge is flush with the ferrule, BTW this is the tip I just did):
And here's what it would look like from the underside:
Very simple but it works great. Also when using a blade I find that slicing (with a smooth solid stroke) works better that chopping or guillotining.
Good Luck!
Basically, I put together a cutting tool using an OLFA UltraMax LBB blade (really sharp and cheep 6$/10 blades), masking tape and a plastic stir stick (for coffee) to cut tips flush with the ferrule.
Trimming tips with a blade is tricky because of the blade's bevelled edge. You can't lay the blade flat against the ferrule to use the ferrule as a cutting guide because it won't cut flush. You need to come in at angle (consistent with the angle of the bevel). If you come in too steep you cut into the ferrule.
So here it is, tape the stir stick to the non-cutting side of the blade so that half the stir stick is under the blade and half isn't. This raises the butt end of the blade to the perfect angle so that the bevelled cutting edge lays flat with the ferrule. So long as you?re pushing the contraption against the ferrule it should cut straight across and not into your ferrule, which means you can now use the ferrule as a cutting guide. (Don't lose a finger, and test it on something other than your ferrule!)
Here are some pics:
Tool balancing itself on the ferrule (you can see how the bevelled edge is flush with the ferrule, BTW this is the tip I just did):
And here's what it would look like from the underside:
Very simple but it works great. Also when using a blade I find that slicing (with a smooth solid stroke) works better that chopping or guillotining.
Good Luck!