Thanks to Justin we have determined that 190c/8.5m is an ideal time for enamel mugs in the oven - 8 at a time at the moment all shrink wrapped.
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Thanks to Justin we have determined that 190c/8.5m is an ideal time for enamel mugs in the oven - 8 at a time at the moment all shrink wrapped.
Attachment 6689
A photo of the BestSub 70l oven with digital controller which seems to be very accurate. Although shrink wrap is working well for enamel it is not great to use plastic and throw away so I am going to try DIY wraps this week using cut silicone strips and bulldog clips. Will test and share results once done.
Ollie, dare I say that you are over complicating and over thinking dye sublimation...Quote:
A photo of the BestSub 70l oven with digital controller which seems to be very accurate. Although shrink wrap is working well for enamel it is not great to use plastic and throw away so I am going to try DIY wraps this week using cut silicone strips and bulldog clips. Will test and share results once done.
Firstly, although an oven needs to have a relatively constant heat it does not need to be that accurate. Most items (if the coating is up to standard), will print within a range of about 10-15 degrees. As most ovens have that sort of consistency there isn't much point in purchasing something that has digital control. Ovens such as the Best Sub one comes from China. You will have more issues with the build quality than purchasing something like the Blizzard which is built for an industrial environment and has excellent build quality (even if the trays are shocking!!).
As far as the Metal mugs go, you are over engineering ;-) The attached, although not the best example, was done by wrapping the paper and putting a silicone wrist band top and bottom. They are available for about 10 pence a throw and are reusuable. As you can see on the image, I am very close to the top of the lip, I have no doubt I could get closer if I needed to, but then most designs would probably not warrant being so close.
Hope this helps :-)
Attachment 6690
Its amazing how he manages to get those times and temps so darn perfect :biggrin::biggrin::biggrin::biggrin::biggrin::bigg rin::biggrin::biggrin::biggrin::biggrin:Quote:
Thanks to Justin we have determined that 190c/8.5m is an ideal time for enamel mugs in the oven - 8 at a time at the moment all shrink wrapped.
Very impressed by the black on your enamel mug and what a tip regarding the silicone wrist bands. This might certainly keep costs low so will Google some shortly unless you're willing to share who you buy from? Do your own times match the 190/8.5m I mentioned? Having come from using mug presses for years on enamel then ovens are a black art at the moment. Just finding quality on enamel not up to par recently and mug presses not giving good results.
I think I grabbed mine from Amazon as I was in a bit of a hurry to get them. But any silicone wristband will work.Quote:
Originally Posted by UK Printed Mugs
Tape your paper tight then sling a band top and bottom and you will get perfect results. Watch out for ink migration which is easily solved by using a couple off bits of tape to cover large exposed areas. Useful tip: You can use them for mugs as well but as mugs are not as even or well made you will get failures
The black is about the ink as well as the coating. This is Sublinova ink from Ink Experts and the mug will be from either LW or Best Sub Poland.
If you ask Justin where he got his times from then you will no doubt not need to ask the last question LOL ;-)
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I'll grab some 8" adult bands although there doesn't seem much room below handle to put a band but will give it a go. Justin does not print enamel you see but does 8.5m for water bottles. We did 160/20m originally as suggested on this thread for mugs but too long to make profit although came out well. A friend does 190/6m for 18 ceramic mugs at a time in their blizzard hence getting advice direct from the dsf guru himself for enamel. We use same inks although not same enamel supplier. Thanks for sharing advice.
I think Simon would like you to know that he advised me 8.5 mins for a water bottle.
Now everybody, when Simon says clap your hands....no! Simon didn't say! ��
oooooh :wink::wink::wink::wink::wink::wink::wink:Quote:
I think Simon would like you to know that he advised me 8.5 mins for a water bottle.
There is not a lot of room at the bottom, but there is enough and I tend to "ride" the band up so opposite the handle its about halfway up the mug. Interesting on the 190/6 for 19 mugs as that seems incredibly quick, but if it works for them then that is great. I might give that time and temp a go at some point myself.Quote:
I'll grab some 8" adult bands although there doesn't seem much room below handle to put a band but will give it a go. Justin does not print enamel you see but does 8.5m for water bottles. We did 160/20m originally as suggested on this thread for mugs but too long to make profit although came out well. A friend does 190/6m for 18 ceramic mugs at a time in their blizzard hence getting advice direct from the dsf guru himself for enamel. We use same inks although not same enamel supplier. Thanks for sharing advice.
I don't know about guru, more like donkey's ass ;-) Happy to share what I can when I can though.
I actually think it was 180/6m or 8m depending on designs. The company use two blizzards and run them all day doing 18 mugs each at a time.
Simon, those bands work a treat!!! Saved me from so much hassle trying to peel off the shrink wrap. I did though do a trial with placing a cut silicone sheet taped on top of the artwork before the band is fitted and this really helped with gassing issues. Without the paper then the bands got all discoloured as well but by cutting A4 sheets into strips (short width of A4 is ideal length to wrap around the mug) then this prevented it. Could I ask two things: (1) What is the max number of enamel you have tried in the oven and do you alter the time if say over 8 (our max at the moment)? (2) After taking out do you wait for the temp to go back up as sometimes the temp drops to 150/160 whilst door is open? Cheers
Ps: Got silicone paper from here
https://www.madaboutink.co.uk/silico...shts-445-p.asp
Glad to hear it worked for you.Quote:
Originally Posted by UK Printed Mugs
With regards to the other questions, I have never bulked printed enamel mugs, but here is where I would start...
I would use the same amount of items as if there were ceramic. I would do this (in the first instance) because I know that one mug versus 18 mugs is an increase in time of approximately 115-125%. So if 1 mug takes 8 minutes, 18 mugs will take 18 minutes. This is all approximate, but then you have a decent amount of leaway in an oven anyway. You may want to put 18 mugs in the oven and start removing them one by one every minute starting at minute 11. Remove 1 mug, peel off the paper and see what it is like. If its perfect you have the best time, if it needs a little bit longer you have more in there to check (I hope I have explained that correctly). Bear in mind that metal heats up a lot quicker than metal hence why I have suggested minute 11. One batch of 18 mugs should give you near on the perfect time and once you have that perfect time, put another batch of 18 in the oven, knock 30 seconds off the test time and give that a go.
I suggest knocking 30 seconds off the test time as you will have reduced the temp a wee bit when removing your test mugs.
I never wait for the oven to heat up when on a mug "run". Pull out the trays, bang two more trays in and hit the timer.
12 enamel mugs, 12 mins, 160 degrees with silcone wrap.
Hi Gary. That's an interesting time. I did initially do 160/20m which was fine but will drop to 12mins and see. Thanks.
What do you think of this oven?Quote:
Originally Posted by UK Printed Mugs
I got the free sub st3042 which is a POS and has failed after 3 weeks
So it’s a toss up between this and the blizzard
How did the diy wraps go?
Where did you get the silicone sheets?
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Very informative thread.. thought I’d bump it to see if there have been any revelations since 2021 [emoji854]
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I'm looking to upgrade to an oven! So any suggestions?
What a fantastic thread. Just thinking of starting printing again in the new year and using an oven this time.
:biggrin:
It is a shame you are not near Manchester, JMugs. I think we will have 2 ovens and about 200 wraps up for sale in the New Year.
It would be quite a trip!:biggrin:Quote:
Originally Posted by bubbleimages