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DIY Sheet press

This topic contains 44 replies, has 12 voices, and was last updated by  Anne 1 week ago.

1
Flo flo-2

DIY Sheet press

04/03/2018 at 11:32

Hi there!
We (preciousplasticvienna) are experimenting quite some time now making 300x300x2mm sheets (you can check our instagram for pictures) and now we want to produce bigger plates. (500x500x10mm)
Since that size doesn’t fit our bought 38x38cm sheet press, we will build one ourselves!

The press should:
– produce ~520x520x10mm sheets so that cou can cut off the edges to get 500x500mm output
– have both sides heated so we won’t have to turn it around
– have an exchangeable mold so we don’t have to wait hours inbetween producing plates
– be time efficient (30 mins per sheet at max. would be great!)
– consume at max. 3kW so we don’t need an extra plug (not the most important thing but would be great)
– not cost more than 500โ‚ฌ to build

my drawings: On the first you can see the rough overall design. There will be a carjack mounted on the bottom to build up the desired pressure. It presses together the two heated sides of the press.

On the upper right of the second picture you can see my idea of the heating. the small circles are short rings of a metal tube that are welded onto the base plate. Onto these rings wwe want to mount the heating coils that are used for injection and extrusion too. We are well aware this is not the most energy-efficient design, however it is the most doable and budget-friendly one we could find. We will compensate that with using good insulation.

On the third picture on top you can see the guiding of the heated moveable plate, we are not so sure whether we really want to include this since it is a big source of problems because of the small tolerance.
On the bottom right of picture #3 you can see the cross section of the mold for the sheet and on the bottom left holes in the base of the mold in order to get the sheet out after molding.

We will begin shopping for parts shortly and are happy about any feedback/ideas/suggestions etc.!

All the best
Flo

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In reply to: DIY Sheet press

warrior
05/03/2018 at 05:29
3

That’s awesome @flo-2
I have wanted to build a heat press using flat ceramic heaters for a while but have not had the time or money to work on it.

Hope your press give you great results.

In reply to: DIY Sheet press

helper
05/03/2018 at 05:56
3

Exciting!

Make sure that the bottom side is sturdy so the pressure will be equal, so the car jack (with one pressure point) will not bend the bottom.

In reply to: DIY Sheet press

warrior
05/03/2018 at 08:02
1

@olivier Thanks, I hope so too ๐Ÿ™‚
@ashrak Thank you for the feedback! I think I will do some calculations to cover the possibility of bending ๐Ÿ™‚

In reply to: DIY Sheet press

warrior
23/03/2018 at 00:53
2

Update 22.03.2018

– We bought 32 heating elements, they already arrived.
– 2 Temperature PIDs (same as Injection & Exdruder & Compression) will arrive tomorrow
– Metal plates are on their way too.

Still need to get:
– square metal pipes
– cables
– on/off switch
– carjack
– electronics box
– insulation
– spray paint for some color ๐Ÿ˜›
– a mold…

Will keep you updated!
Flo

In reply to: DIY Sheet press

helper
25/03/2018 at 13:16
1

@flo-2

Sound’s good !
Wich heating element you order ? Need one for my T-shirt press

Thank in advance

Cheers

In reply to: DIY Sheet press

helper
25/03/2018 at 14:44
2

@geat T-shirt press? You are kidding???

In reply to: DIY Sheet press

helper
26/03/2018 at 19:06
1

Hahaha @sonik ! You are probably one guy who try to sell shirt on the bazar… Right ?

Yea T-shirt press and it’s not a joke. I stole some material in industry who are not ethical. without press = no print = less shirt sold ๐Ÿ˜‰

My shredder come from a chicken farm who shred babies chicken ๐Ÿ˜‰

In reply to: DIY Sheet press

helper
27/03/2018 at 08:47
1

@geat You steal material and you are proud of that ??
Because you consider it non-ethical so that gives you the right??
Get some help, man!

In reply to: DIY Sheet press

warrior
27/03/2018 at 21:49
1

@geat @sonik

Yes, why not? We do everything with a Tshirt press itm ( click here ). The heating elements we ordered won’t help you much with a tshirt press I fear^^

All the best
Flo

In reply to: DIY Sheet press

helper
27/03/2018 at 23:04
1

Thank’s @flo-2

Ho with @sonik it’s an old story on the bazar about T-shirt precious plastic. Nothing importante.

Really nice topic about the press i loooove it !

My press is one for the big size. My plate make 60cm x 60cm x 3cm(high) but i have hitter only on the top.

In reply to: DIY Sheet press

warrior
27/03/2018 at 23:11
0

@geat Nice! :O How much pressure can you apply? (about)

In reply to: DIY Sheet press

starter
28/03/2018 at 00:39
1

i would suggest using 4 carjacks , one in each corner, to limit the instability of the platform, and their cranks should be connected to each other so that one single crank can be used to lift and lower them simultaneously

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In reply to: DIY Sheet press

helper
28/03/2018 at 12:10
1

@flo-2 good question, is an hydrolic press, i don’t know the pressure.
You still don’t want to say me which hitter element you order ? ๐Ÿ™‚

In reply to: DIY Sheet press

warrior
28/03/2018 at 19:50
1

@geat sure i can show you which ones: click me!

In reply to: DIY Sheet press

warrior
28/03/2018 at 19:52
1

@carmatic good idea, thanks for the input, however for 60x60cm one should be enough. We will weld it to one heated plate so it shouldn’t move a bit ๐Ÿ˜€

In reply to: DIY Sheet press

helper
28/03/2018 at 19:54
2

@flo-2 Thank you very much ! I will try this too.
I Thing you open it and fix it flat on the plate, right ?

In reply to: DIY Sheet press

warrior
28/03/2018 at 20:00
1

@geat most likely without opening, look at my drawings ๐Ÿ˜‰

In reply to: DIY Sheet press

starter
29/03/2018 at 08:58
4

Hey probably a bit late but I had a thought that might help. This is an idea I want to make for myself but I want to share and get your thoughts on the subject. Basically for larger sheets I’m going to use an old pallet jack, hydraulic ram under the hand mechanism lifts two long steel reinforced tynes parallel to the surface on which it sits. But also has 2 bottle screw jacks in between. This will give you 3 different configurations you can press 2 smaller sheets at once, or alternate to allow for mold changes. Or press one massive sheet. If designed properly you could probably do all 3 at once. Love to know your thoughts.

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In reply to: DIY Sheet press

dedicated
30/03/2018 at 01:27
3

@flo-2 Great to see you working on a sheet press. I have also been doing my preliminary reserach before I start to build
1. Distance between heaters is crucial so you dont get hotspots or coldspots. Look for radiant distance between them for optimizing heater placement.
2. Insulating the press for heat loss during the cooking phase.
3. I spoke to a plastics veteran and showed him the plans for the press done by @markbertbach he went with heating to a liquid first in the oven and then pressing as a process that would work without drawing too much power, if you want to limit power consumption. If you want the speckle pattern then this method will not work.
I think the sheet press is the holy Grail for us in the community because it will allow us to make anything.
I’m working on press that will allow 1200mm x 2400mm
hope this helps

In reply to: DIY Sheet press

helper
31/03/2018 at 11:55
2

@flo-2 really really thank’s men ! that work !

I take the hitter element of you show me and open it to put front in the plate.

It’s take about 45 minute to have 200ยฐ for a plat of aluminium 2cm x 60cm x 50cm

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In reply to: DIY Sheet press

warrior
31/03/2018 at 14:43
1

@geat great! You’re welcome ๐Ÿ˜›
How many heaters did you use on that aluminium plate? How did you mount them? Weld?

In reply to: DIY Sheet press

helper
31/03/2018 at 19:14
1

@flo-2

There are 4 sensors size 1cm x 4cm and they are just pinched between the two plates

In reply to: DIY Sheet press

dedicated
01/04/2018 at 03:09
1

@flo-2 How much pressure do you need to press your sheets of plastic?

In reply to: DIY Sheet press

warrior
08/04/2018 at 22:03
1

@geat thanks!
@plastikfantastik I don’t know ๐Ÿ˜€ But my tshirtpress currently can do 30-50kg of pressure (just an educated guess) but the 1ton a carjack can do will be enough!

In reply to: DIY Sheet press

warrior
08/04/2018 at 22:10
3

Update 08.04.2018

– Planning for mold & press complete
– Temperature PIDs arrived
– Heating elements arrived
– Metal plates arrived
– Square metal pipes should arrive soon

Will keep you updated!
Flo

In reply to: DIY Sheet press

starter
19/07/2018 at 20:54
2

This looks fantastic. Any progress in the past few months?

In reply to: DIY Sheet press

warrior
20/07/2018 at 07:15
4

@nickchomey hell yeah we’ve got updates! Thanks for the reminder! ๐Ÿ˜‰

Update 20.07.2018

The baseframe of our machine has beenย  welded, and we named it “Biggie”.

We changed mind about the carjack and installed a 5 ton load carjack instead of a 1 ton one… Let’s see how that works.
Next steps:
– Weld heating element pipes to the heating plate
– Connect the electronics
– Insulate
– small fixes and changes

We hope and estimate to have Biggie up and running early this August.

Until then,
All the best
Flo

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In reply to: DIY Sheet press

warrior
20/07/2018 at 12:54
2

How many band heaters have you got there, 32? How many watts each?

In reply to: DIY Sheet press

warrior
01/08/2018 at 07:32
1

@andyn 32 heaters and 110 Watts each.

In reply to: DIY Sheet press

warrior
01/08/2018 at 12:51
2

@flo-2

 

Ok, that’s a little over 3.5kW maximum power. It would be really interesting to know the energy consumption to produce one sheet. Do you think you’d be able to measure/calculate this?

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