DSF

dont get me wrong John! I did not wanted sound daft and upset you.

I fully understand what u r saing but in my case when mugs r cold and temperature drop after stick them in to the press I set my press for 220sec. no 180sec and this is ok for me with out warming mugs up.

Robert wrote:Mugs are crap, gaps all around them. Thanks BMS! Would dread to see what they were like before!
"Our European Mugs have just got even better. Still the same bright white, RN Coating, but now even straighter sides. "

Have I been sent the old ones??

I know the fealing mate! but I think is still to early to blame the mugs. henestly... when you get this all right you will lough.

I did a run of solid black mugs similar to this recently and had the same problem. As already indicated it can be down to insufficient pressure. Do you have the paper cut to the exact height of the mug or does it overlap top and bottom by a few mm?
How close are you trying to get to the handle? Sounds like you need to make the width of the print a wee bit smaller.
Black can go brown if overheated as well but I think pressure is your culprit. When i got my latest press I had to increase the pressure a considerable way past what i thought was comfortable for not breaking a mug!

Thanks Justin. If you look at the photo with the two mugs in, the first one, the blacks were green. The second one, the base was brown - I think I saw your post on this.

I've reduced the height and width of design on second one, and edges by handle are sharp on one side, it's just the bottom now I guess.

Paul - I guess the higher pressure will compensate for uneveness
John, pressure will even out any slight twist - surely?

So, to summarise, what does everyone recommend for my 4th mug?

do it sas you do it now but after pressing tur it arround in the press. and give it another 45sec up to 1min. try it. if no luck I own you a mug

I was about to ask which mugs you were using. I ran an extensive test on mugs a couple of years back. I contacted every UK supplier I could find and requested a sample. Most responded.
I ran full wrap tests etc. and came to the conclusion that nothing could compare to Lisatwood mugs. So we bought by the pallet. Never had an issue with them at all. OK, that's been said........Great mugs but the service I received from LW has been poor. They gave me an astronimical price for delivery, when questioned it fell to a decent level. now I want to place another order it's shot back up again. Theyr'e not interested in me because at this stage i only buy a few boxes at a time. (Shame they don't know what's around the corner for me this year!)
So now I'm looking at changing to BMS. The mugs aren't as straight but they're better packaked and all test thus far have been perfect.
Not the first time LW have let me down on service, it cost me a full Rotech CIS last time....will I ever learn?

Sorry to digress but I felt it worth putting in at this stage.

My problem was solved by much higher pressure. My press is height adjustable for the mug position so I wound it up a little. Brought the temp. down a little. I now do 185c for 185 secs.

I've increased the pressure - should I decrease it and just rotate the mug?

I never rotate the mug. The press gets within a couple of cm's of the handle which is fine for me. This increases your turnaround time considerably. Fine when you'e doing 1 or 2 mugs but wait until you get 36.....or 500 as I did last year. you'll just want them done asap!

Robert wrote:I've increased the pressure - should I decrease it and just rotate the mug?

do it same preasure as you have done your last mug. but this time rotate it.

Sorry Paul - Justins right. If the solution is to rotate it, then the press is no good to me. I just haven't the time for that. But, I think I've cracked it. Just printed a photo mug, will take pic shortly and post. I increased pressure and gave it another 15 sec