Author Topic: Location of the off contact adjusment  (Read 3300 times)

Offline tonypep

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Re: Location of the off contact adjusment
« Reply #15 on: November 22, 2016, 09:26:36 PM »
With regards to M&R macs it varies from older models to new  FYI. That said, central works and has worked for many if not most, with the occasional shim on the PLS/UB; as the viscosity/rheology of, for instance, a high viscosity long shear ink may require more time to release than a low viscosity short shear. Confused? I won't mislead you by telling you not to be. For instance, a slightly slower, longer print stroke can often achieve  desired results without adjusting the off contact or double stroke. Did I not mention mesh count selection, squeegee selection/parameters, and how they all affect eachother? Its all about the release of the ink to substrate (assuming cure issues are under control). Think of it in three parts...
the ink, the transfer mechanism (screen) and the substrate. If all those parameters are dialed in then your life shall be simple.
Guess I may have an article to write after all


Offline jsheridan

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Re: Location of the off contact adjusment
« Reply #16 on: November 23, 2016, 02:10:03 AM »
 A central off contact is nice, the added bonus is individual head adjustment.  Not a fan of shims as already mentioned comments of squeegee pressure and floodbar adjustment are just more variables floating around in my head that I can forget about.

Working on a sporty right now and today alone I was under that machine twice flipping the lever.
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Offline jvanick

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Re: Location of the off contact adjusment
« Reply #17 on: November 23, 2016, 08:16:58 AM »
this is actually one feature that Anatol really got right on the volt.... digitally controllable from the operator panel central off contact.  Do any other presses have that?

Offline mk162

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Re: Location of the off contact adjusment
« Reply #18 on: November 23, 2016, 08:44:48 AM »
this is actually one feature that Anatol really got right on the volt.... digitally controllable from the operator panel central off contact.  Do any other presses have that?

I think the new RPM's do or any with the panel upgrade.  You can change ours from each head electronically.  Honestly taking 2 steps over to the head isn't a big deal since you can't adjust it while printing anyway.

I wish I could adjust the flash from the main panel, that gets old fast.

Offline Underbase37

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Re: Location of the off contact adjusment
« Reply #19 on: November 23, 2016, 09:13:29 AM »
I have used all of the above. I do feel individual head adjustment are nice at times. But it's much quicker to go from tee's to fleece with a central off contact, as I don't have to run around the press adjusting all 6-8 heads, just one movement and they are all done. On newer presses with the central off contact the only time I could see a need for shims is if using a jig or some specialty inks with other inks needing to be set at normal off contact.

I agree with Zoo, both would be optimal. But with more employees the risk of individual head off contact you run a higher risk of things getting a little hairy if people are moving them and not adjusting them back. 

Murphy


Offline Underbase37

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Re: Location of the off contact adjusment
« Reply #20 on: November 23, 2016, 09:38:03 AM »
@Dan. I have seen it where a shop is using a deeper off contact as a default so they don't need to think about adjusting the off contact when moving from tee's to fleece. I'm personally not a fan of this, but I guess I get it?

Murphy


Offline 244

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Re: Location of the off contact adjusment
« Reply #21 on: November 23, 2016, 10:09:33 AM »
I have used all of the above. I do feel individual head adjustment are nice at times. But it's much quicker to go from tee's to fleece with a central off contact, as I don't have to run around the press adjusting all 6-8 heads, just one movement and they are all done. On newer presses with the central off contact the only time I could see a need for shims is if using a jig or some specialty inks with other inks needing to be set at normal off contact.

I agree with Zoo, both would be optimal. But with more employees the risk of individual head off contact you run a higher risk of things getting a little hairy if people are moving them and not adjusting them back. 

Murphy
That is exactly what happens. we had both on the presses for a short time and QUICKLY realized how bad a customer can screw up the entire off contact on a press. It needs to be either or but not both.
Rich Hoffman

Offline ZooCity

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Re: Location of the off contact adjusment
« Reply #22 on: November 23, 2016, 12:29:20 PM »
Agreed that press ops might fudge up the individual o.c.  definite risk there in any shop. Digital would solve that issue,  one button reset at panel.   Or simple detent knobs and maybe visual reference.

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Offline 3Deep

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Re: Location of the off contact adjusment
« Reply #23 on: November 23, 2016, 12:39:12 PM »
this is actually one feature that Anatol really got right on the volt.... digitally controllable from the operator panel central off contact.  Do any other presses have that?

Another plus on the Anatol machines is levels of OC they have, I can't say about other machines but I know I have plenty of OC settings 0 to 3/8
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Offline Prints Charming

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Re: Location of the off contact adjusment
« Reply #24 on: November 23, 2016, 08:57:39 PM »
Workhorse Sabre is central on shaft 3 differnt offset presets.works like a charm.  Easy to change from tees to hoodies ( we do a lot of hoodies in south Texas )
Randy Wilbanks 361-533-0593 Prints Charming Royal Tees corpus Christi Texas