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+   T-Shirt Forums > T-Shirt Industry Information > Direct to Garment (DTG) Inkjet Printing > DIY DTG > [DIY DTG] T-Shirt Dryer
Thread: T-Shirt Dryer Reply to Thread
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Topic Review (Newest First)
October 27th, 2013 10:23 PM
NoXid
Re: T-Shirt Dryer

Quote:
Originally Posted by gitano
Hey NoXid,

Did You try this with just one lamp? I could imagine that with multiple bulbs the way the OP installed them, the space required to cure the print gets lighted/ heated pretty even, or not?
Yeah, I tested with just one lamp. Having more lamps won't do anything to get rid of the hot spots created from the design of the elements.

For waterbase/discharge I think the best design would use only hot air and not have any direct radiation at all. A heat gun actually does a great job on discharge, but it is a bit tedious for any quantity of shirts. Imagine building an oven that works on the same principle... The exact nature of the heat source really becomes much less important if it only heats air and does not radiate directly on the shirt. All the professional ovens are based on designs first used to cure Plastisol with radiant heat... far, far from the best approach for waterbase.

All that said, I've settled on letting shirts air dry for a bit and then curing them with a heat press.
August 2nd, 2013 02:07 AM
gitano
Re: T-Shirt Dryer

Hey NoXid,

Did You try this with just one lamp? I could imagine that with multiple bulbs the way the OP installed them, the space required to cure the print gets lighted/ heated pretty even, or not?

I am currently looking for a new method to cure my shirts, using mostly water based inks but planning on using discharge and plastisols as well. Until now i've been curing my water based prints in the kitchen oven, which actually worked pretty well. But i definately do not wanna cure other inks in there... especially not discharge inks. Also, i have neither space nor money for a professional conveyer dryer or a flash unit (these things are kinda expensive over here in europe...)

What i am planning to build is a stationary little curing oven, basically nothing more than a 20x20x20" box, with a removable heating element on top (which could serve as a flashing element as well). Front will be open or shielded, i have to see what works better. Distance from the garment to the heating element will be either adjustable by altering the bottoms height or the height of the heating element.

As for forced air, i want to solve 2 problems with one solution: Firstly, i want to install an exhaust fan (some kind of strong inline blower) at the rear, which is mostly for sucking the fumes out of the box, pulling them through a carbon filter (or something similar, whatever works best on formaldehyde contaminated fumes with discharge inks) and pushing the air outside the window. Secondly, it should pull the hot air from top to the bottom, so maybe it should be installed near the bottom rear, or maybe even underneath the bottom plate (which could be an aluminium net or holed plate or something) itself.

Leaves me with the most important question... what kinda heating elements could serve the purpose best. When i started using plastisol inks, i used a 1500W quarz infrared heater manually (the ones available for the bathroom/ baby-supplies) which worked quite well. One could install three of them as a heating panel, could be a pain to modify the switches and electronics though, as most of these have a kinda 3-way switch with a strip attached, which is kinda unhandy.

Other sources of heat could be: A modified 1500W 20x20 infrared heating oven for the living room, heating elements of an electric barbecue grill, or such heating lamps as the OP used. Any more ideas? Been searching around quite a lot. It should be able to heat a 15x20" space pretty evenly, should be rather cheap and relatively easy to modify.

Cheers!
gitano
July 25th, 2013 07:38 PM
NoXid
Re: T-Shirt Dryer

I ran a test yesterday with a 300w heat lamp.

At 5" it reached 350.

However, the heat was extremely uneven, with one hot spot of 440 (which scorched my test target). The heat fell off quickly at the edges.

I noticed that the filament is shaped like a triangle, but with one leg of the triangle missing. The light emitted from this (both direct and reflected by the back of the bulb) is obviously going to be anything but even.

If there was a heat lamp with a centered light emitter (like a HID in a headlamp), then I think this approach would have great promise. However, with the typical heat lamp bulb, I think the output is too uneven for curing discharge/waterbase (my area of interest).
May 7th, 2012 10:28 PM
Mitchellguy
Re: T-Shirt Dryer

Thats crazy...
December 10th, 2011 07:45 PM
colorfinger
Re: T-Shirt Dryer

Quote:
Originally Posted by german13
Bob,

looks like this one was built with your inspiration/ and plan design..

https://www.t-shirtforums.com/screen-...ml#post1021409
It's always a good feeling to be someone else's muse.

Bob ?;O)
December 10th, 2011 06:27 PM
seashirts
Re: T-Shirt Dryer

I looked it up, its a drop on demand thermoelectric 15360 nozzle count. Just some food for thought
December 10th, 2011 03:55 PM
102557
Re: T-Shirt Dryer

Quote:
Originally Posted by seashirts
looks suspiciously like the hot case at the deli. Speaking of food, anyone know what kind of printhead is used in this machine? Printing photos direct on a cake with icing - YouTube
not sure what printer that vid is, couldnt get a close enough look..

realy no matter what the printhead is as long as you have edible ink Inkedibles | 123 Refills Catalog

you could use your diydtg as long as it acomodates the size of cake
December 10th, 2011 03:39 PM
seashirts
Re: T-Shirt Dryer

looks suspiciously like the hot case at the deli. Speaking of food, anyone know what kind of printhead is used in this machine? Printing photos direct on a cake with icing - YouTube
December 10th, 2011 02:37 PM
102557
Re: T-Shirt Dryer

Quote:
Originally Posted by colorfinger
The shaft of a bicycle is quite large. You would need some kind of coupler or something to attach a bicycle sprocket to a small motor... Doable I am sure....

Bob ?;O)
Bob,

looks like this one was built with your inspiration/ and plan design..

https://www.t-shirtforums.com/screen-...ml#post1021409
October 15th, 2011 10:01 AM
colorfinger
Re: T-Shirt Dryer

Quote:
Originally Posted by BearThreads
Bicycle parts are very easy to find and give many choices if you don't need to vary the speed. If you did need to change speeds, you could also try using the entire spindle from a rear bicycle wheel along with the derailer to change gears and keep tension on the chain.
The shaft of a bicycle is quite large. You would need some kind of coupler or something to attach a bicycle sprocket to a small motor... Doable I am sure....

Bob ?;O)
October 15th, 2011 09:53 AM
BearThreads
Re: T-Shirt Dryer

Bicycle parts are very easy to find and give many choices if you don't need to vary the speed. If you did need to change speeds, you could also try using the entire spindle from a rear bicycle wheel along with the derailer to change gears and keep tension on the chain.
October 12th, 2011 09:43 PM
Gilligan
Re: T-Shirt Dryer

I'd think a Variac might work vs a dimmer.

Also you could just use some simple belts and pulleys. That should be easy to source... lawnmower if nothing else.
October 12th, 2011 09:10 PM
Naptime
Re: T-Shirt Dryer

well i have an actual flash dryer, as well as a heat press. but my roatry table makes things faster. especially for larger runs.

i just have to remember to set the time for it and rotate it. that's why i wanted to automate it.

my motor is working great as well, i just need to slow down the speed of rotation, that's why i was wondering where you got those gears and the drive belt from.

here's how fast mine is turning right now...


i think mounting the motor differently, and using some gears will do the trick.
October 12th, 2011 08:18 PM
colorfinger
Re: T-Shirt Dryer

Jay, Yes that's my video. I've tried a couple of different rotisserie motors and a gear motor. The best motor that I used was a AC Motor that I bought from McMaster Carr. I don't remember which motor at this time... I burned it up dickering with it and it's still unfinished. I have been using my heat press all this time and it works fine...

Thanks,

Bob ?;O)
October 12th, 2011 08:07 PM
Naptime
Re: T-Shirt Dryer

bob, if i am correct, this is your oven video ...



wondering if you can help me...

i've built a rotary conveyor dryer. using a rotisserie motor to power it.

but it's too fast.

tried using a dimmer switch, but it just turns the motor off..

i have a thread here:

https://www.t-shirtforums.com/screen-...t/t167502.html


if that is your video above, i think it solves my problem.

your belt is 3 minutes. i need for my table to be at 1 minute.

i see you have two gears and a belt to change the speed of rotation..

where did you get those gears and the belt?

thanks !!
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