A Digital Printing Network
Cut Question
Here's one for you guys.
We had record high temps here in So Cal last week and we got a "Too hot" message on our VP540. Turned it off cooled it down and fired it back up no problems at all .
BUT a job we had been working on the previous day which was the cut phase of some thicker graphics, which we'd been cutting one pass at 300gms of force no problems, now will barely get through with two passes.
We haven't changed anything at all, cut pressure, speed, blade depth, offset , temperatures, etc, etc are exactly the same - it's almost as if the machine has just lost some cut force.
Has anyone else has this at all ?
As usual thanks very much indeed ! Sean
Replies to This Discussion
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Permalink Reply by Sean De Gruchy on -
John, the blade was still in the holder from the previous day - that's the strange thing, apart from the printer having to be turned off everything else is exactly as it was...
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Permalink Reply by irving donaldson on -
I am with John, remove the blade and check the tip. A worn tip can easily chip. 300gf is a lot of pressure. I would if the runs are short, cut it in multiple passes. If the substrate has composites - like magnetic material, then I would also consider slowing down the cut speed. When the blades makes it initial cut - it will punch down to get the correct direction cut - so that is where it is more likely to chip. Visual close inspection would be your start in MHO.
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Permalink Reply by Sean De Gruchy on
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I ordered a new blade so I'll give it a go when it arrives and let you know the outcome.
Thanks!
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Permalink Reply by Butch on
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I'm all in on the blade being chipped. For thicker materials I use a 60 degree blade in a separate blade holder. Always order 2 or more blades at a time - when one dulls order 2 more etc..This way you have extras at all times.
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Permalink Reply by John H. on -
I've been a Mechanic/Tech for 30 some years always check the easy most likely stuff first before you get into the strange cosmic stuff, 99.9% of the time it's the most basic thing that's overlooked. BTDT
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Permalink Reply by Sean De Gruchy on
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O.K guys I'll keep you posted .
I've been using the 60 degree "sandblast" blade I really recommend it for thicker material.
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Permalink Reply by irving donaldson on
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For thicker material the blades with higher degrees are better due to less blade in the media. The issue with that is that it is harder to detect a chip with the necked eye. I recommend a magnify glass for all serious VC users. Not that I have ever met a non serious VC user.
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Permalink Reply by Sean De Gruchy on
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I got the new blade today and comparing the new with the old it does seem as if the end has been chipped off. Test cuts later today !
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Permalink Reply by Sean De Gruchy on
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Well new blade worked chaps ! Must have been just a weird coincidence.
BTW on the old one I'd been using 300gms to cut with the new one I only need 225gms, go's to show how worn that old one was.
Thanks again for all your help,Sean
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Permalink Reply by irving donaldson on
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LOL Sean - you call it weird coincidence - some of here on this forum calls it wear&tear. I will assure you the next time you will understand the symptom sooner. Also be aware that there is no timing on a blades life and they tend to chip on their own schedule. Enjoy your smooth cuts.
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Permalink Reply by Sean De Gruchy on
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Oh yes I meant as the timing of that and the machine getting too hot and shutting down !
Thanks for all your help !
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