Large glass clock printing problem help please

[MREDD]

Hi All

Does anyone have experience of sublimating large glass clocks? (30cm) Longforte reccommend 4m at 200dg

I am getting a whishy washy white blurring / ghosting in certain areas but not in all areas of the print.

I have tried pre-pressing for 60 secs & then 4m at 200dg but they come out as above, if I increase the time then the wishy washy effect lessens slightly but not that much, also in increasing the time I overcook turning blacks to brown so by slightly solving one issue I create another one.

I have tried it also a 5m with a thin pad on top. Longforte also suggested a pad to help keep the pressure even over the surface, not sure if such a pad should go on the top on under the clock? or indeed how thick a pad or if that would make any real difference.

I have customers waiting on orders I have wasted about seven clocks at about £7 at time trying to perfect them & I have not had a decent result yet!

Can anyone offer any words of wisdom.

Thanks

Ed

[Quinsfan]

What press are you using? Is it a clam or swing? Chinese import? It may have some cold spots.

[MREDD]

It's an Adkins swing press, so a good one.

Someone somewhere else asked which way up I presented it to the press, the answer was paper facing up to the heat platten, it has been suggested to me to try again but with the paper side facing down / away from the heat & press it through the back.

Longforte just suggest 200 for 4m they don't offer any guidance as to which way up, so I have one more blank clock in stock to giver it a try with. I would welcome thoughts on which way up to have the paper in the press.

Ta

[Justin]

you preheating? I hate the glass clocks

[MREDD]

you preheating? I hate the glass clocks

Hi Justin

Up to now yes preheating / prepressing for about 30 to 50 seconds, but each time I have pre-heated I have pre-heated with the frosted/chinchilla side up to the heat.

Ed

[Andrew]

Used to print loads of large glass clocks years ago. Paper side is away from the heat platen so onto the mat. Glass face up so in contact with platen. 195c at around 6 to 7 minutes was good. Needs time for heat to travel through glass. Worked for us.

[MREDD]

Thank you Andrew, would you suggest any pre-heating?