My guillotine is cutting poorly

[robbg439]

My Triumph 4810 paper cutter is doing a pretty poor job of cutting straight down. Every time I cut, the top sheet of the stack is cut shorter than the bottom sheet. Any ideas what could be causing this?


Thanks

[rbailleu]

depends on how far off it is. are we talking a 1/16th. check your clamp pressure. sharpen your blade. bushings warn out

[robbg439]

Yeah, on a two-inch stack the difference is about 1/16th inch. Its a brand new blade so I don't think dullness is the problem. The clamp is as tight as I can get it. How do I check if the bushings are worn out?

Thanks,
Gary

[LoneGoose]

Maybe shouldn't be clamping too hard? You can get a 'mushrooming' effect if clamping too hard.

Although, I think, this might result in the top sheet being longer, not shorter. I might be wrong on that point though.

Silly question, but have you tried clamping softer?

[Happyprinter]

Had a similar problem with our Cutter. Adjusted the knife guides that run vertical along both ends of the blade as it travels up and down. Might be your problem. The other suggestions are also good.

[rbailleu]

sorry by bushings I meant knife guides. take the blade to the bottom cut the power see if the knife holder has any play in it. if not see if there are adjusting screws to push the top in or out as needed. there should be some adjustment. 1/16 on a 2 inch stack is pretty bad.is it the same for 10pt c1s as for 60# OFFSET. I have seen several different types some have bushing plates that push against the front of the knife carrier. some have guides in the side frame

[LoneGoose]

Cutting the power at bottom-dead-centre is a huge pain. At lease on our Polar, if the power cuts off during a cut, you need to wind the blade back up manually - quite a physical task.

But if it means getting your guides etc. straight... oh, well.

[rbailleu]

yes, but I think this is a little electric sandwhich cutter.

[Beaker]

Cutting the power at bottom-dead-centre is a huge pain. At lease on our Polar, if the power cuts off during a cut, you need to wind the blade back up manually - quite a physical task.

But if it means getting your guides etc. straight... oh, well.

Does it not stop at the bottom of the stroke as part of the blade change process?

[RNRPRINTINGNMAILING]

Hello
What kind of stock are you cutting, also trying putting in a smaller amount in your lift.
I had the same problem, These cutters are known for that.
Also try putting the lift in the center not off to the right or the left after you jog it.
Good Luck
Rob in VA