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squeege sharpener

Posted on Fri, 9 Feb 2007 at 17:14



hi all we are currently looking for a new squeege sharpener there are many to choose from .We are large format up to 86 inches so we need a 90 inch sharpener anyone out there with exprience or knowledge as to which system works best. Knife,diamond grinder, belt. We print up to 85 line 4cp as well as solid coatings so we need a really good sharpener.We are looking for a flawless edge as well as uniformity less than .005 of an inch along an 86 inch blade . Thanks Treeman

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kjrm112 says: I have used a few different squeegee sharpeners over my career. The diamond wheel form Diamond Kutronic is the one I have used the most. Usually equipped with two different grit wheels one fine and one ...

I have used a few different squeegee sharpeners over my career.
The diamond wheel form Diamond Kutronic is the one I have used the most. Usually equipped with two different grit wheels one fine and one rough. I have found that is gives the most consistent grind to the squeegee. Although the wheels do eventually have to be replaced, as long as the machine is well maintained, will give you the least headaches. The machine will also increment the wheel to your squeegee so as to allow all "wow's" and damage that has occured during the printing process to be evenly smoothed out. The one downside to this system is if you are not careful when setting the height of the wheel, you could end up melting the rubber to the whell and damaging the wheel. But it is still a very good system.

Next I have used the sharpener from Kinzel. It uses sandpaper to grind the squeegees. It works very well, but I found that in a high production shops that there can be quite a lot of consumption of sandpaper. One thing that makes this a little better than the wheel is you can set the machine up to do both rough and fine passes. What I mean is the machine is equipped with two wheels. One for fine sandpaper and one for rough. the machine will typically do so many settings in rough and so many for fine to finish the rubber. It all depends on what you are printing. Basically you were able to set the height and how many passes you wanted, walk away, and by the time you got back the squeegee will be ready.
Finally I have used a couple different cutters for sharpening squeegees. I have found these to be my least favorite. In the two shops that had these, I found the waste in squeegee rubber was much higher than you will ever have with a grinding type sharpener. there was just too many issues and problems with the systems to detail out. I found that things went a lot smoother with the grinding system especially when running fine halftones.
I also have to bring up some of the finishing techniques for squeegees. I usually clean the squeegee after with my regualr solvent, but have found it helpful when I take a 600 grit sandpaper in my hand and pass it along the edge gently to pick up and fine knicks that the sharpener may have missed. I would usually go more when printing solid colors.
Hope this helps. this in no way implies that these are the best systems or poor systems, this is just what I have experienced.

posted on: Thu, 03/15/2007 - 6:32pm

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