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can anyone help please with a guillotine issue?
a question for guillotine users.
i am using a cheaper end of the market guillotine and having a few problems, mainly the cards move but only in the lower part of the stack,
is this a known problem of silk type finishes how is it sorted.i printed a grid on to 10 sheets of card and cut them up and was next to perfect.
i printed 10 sheets of cards about 40% ink and set about cutting them up, but found poor reg in the lower part of the stack. the top few sheets are all perfect.i noticed that the printed cards slip against on another a lot easyer than unprinted card
if i trap a 12mm thick felt squeegee in the clamp i just can not move it. so there is a lot of pressure there but may be still not enough.
i have gone through the reg of the printed sheets and all identical so must be the cutting ?
any advice please
chris
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8 Replies
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on a litho guillotine, a bar comes down to hold the stack of card while it is butted up against a side, then the blade will chop away.
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yes dave there is a heavily spring loaded clamp bar that comes down a bit before the blade. does not matter whether its against the back stop and or side rail guides. trying to learn more about spring compression rates.
chris
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What guillotine is it Chris?
It will be my next investment to go along with the OKI c8800 printer i’ve just purchased.
Philip -
If it’s a spring loaded bar that is not hand operated or a power clamp you will probably have to live with it Chris.
Card stock needs a high clamping force. If the card stack is not clamped with enough force you usually find as the guillotine blade shears it drags the card either skewing it slightly or pulling the top of the stack over.
Only solution is either more clamping force or a smaller stack.
On my hand operated Ideal with manual clamp I can only do a certain number of sheets depending on card stock.Also slip a few sheets of waste paper on top and underneath the stack so you can clamp as hard as possible without damaging the cards and leaving a mark from the clamp.
For small format the main guillotine name is ‘Ideal’ been around for ages. Best to purchase a power clamp model if your looking at doing cards as it speeds up operation not having to wind the clamp up and down.
Tim.
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thanks for that tim its put me on the right track at least i might not be the operator.
chris
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Maybe try some 1 sheet of std 80gsm paper between each card sheet Chris to see if it improves any sliding.
Tim.
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Hi Chris,
As Tim mentioned, if you want to cut things acurately you’ll need a heavy duty clamp and sharp blade. Ebay have 2 ideal guillotines on at the moment, one at £75 and the other at £500 – buy it now. I’ve used these Ideal models for years, they are great for cutting down business cards and stickers. They will cut through a ream of paper in one go with no problems aslong as the blades sharp.Cheers John
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thanks guys well i think the blade is sharp its new and goes through 25 mm of card very cleanly, i have noticed that the thicker the stack then the more accurate it is, this equates to more pressure so working on the idea.
chris
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