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Sheet Press Mould Oven

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This topic contains 9 replies, has 4 voices, and was last updated by  Jason Knight 2 days ago.

Jason Knight jasonknight

Sheet Press Mould Oven

04/02/2019 at 13:28

Hello Community!

This is my first topic, woop woop!

I am taking the lead on designing an oven which will be part of the sheet pressing system. I am working in collaboration with @markbertbach.

All information about the umbrella-project can be found here https://davehakkens.nl/community/forums/topic/v4-sheet-press-development/.

We have opted to use an oven as the heating method as we have anticipate that it is the most energy efficient way to melt the plastic as an oven allows the heat to be contained and the same air to be circulated evenly without escaping.


The alternative idea was to embed the heating elements in the bed and roof plates of the press itself but this plan was abandoned for the above mentioned reasons plus several others. With embedded heating elements the press is required to heat and fully cool during the process of making each sheet. With a separate oven a second sheet can be heated whilst the first is cooling allowing more sheets to be produced each day. This also increases energy efficiency as  you do not have to repeatedly heat and cool the the heating elements and subsequent heating components, as they can stay on constantly.

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In reply to: Sheet Press Mould Oven

04/02/2019 at 13:32

We have developed a 3D model of the first prototype oven. I have attached a picture with a presentation detailing the construction process and some of the areas we still need to research.


In reply to: Sheet Press Mould Oven

04/02/2019 at 13:36

hi how is this project coming along? i would be keen to learn more and perhaps replicate down the line. Do you intend to share or sell the plans? what is the largest sheets the machine will produce?



In reply to: Sheet Press Mould Oven

04/02/2019 at 13:38

I have an open question for the community.

Our first design uses ceramic insinuation bricks to contain the heat. We would like to find out more about the availability of ceramic insulation bricks. Could anybody provide some information about the availability of them in low resource areas.


If people have any alternative suggestions to the ceramic bricks that would also be greatly appreciated!

In reply to: Sheet Press Mould Oven

09/02/2019 at 20:59

Hi Richie, the project is coming along nicely, it is in early days but will be finished by October. We will open source it so you can replicate it 🙂

In reply to: Sheet Press Mould Oven

09/04/2019 at 14:52

Dear Jason,


We have met in Underbroen (Copenhagen). My name is Asger.


We are part of an EU project, where we want to both create and test a circular model for plastic in Copenhagen, and figure out a way to locally produce recycled plastic sheets (a la Smile Plastics) that can then be processesed as we normally do with plywood.


I’m therefore following asll of these Sheet-discussions closely. Maybe we can arrange a call asap?


Please feel free to write me if you are interested to hear more: [email protected]




In reply to: Sheet Press Mould Oven

13/05/2019 at 19:34

Hey Community,

We are prototyping v2 of the oven which will be part of the sheet pressing system.

Does anybody have an information about insulation types that they would be able to share? We have complied a list of types available in the Netherlands but it would be great if we could know what is available in more remote parts of the world, what you guys have learned from working with these, and if you have any sugestions of alternatives?



SilicateIsofour Plates

Phar gas Plates


Ceramic Brick

Ceramic Felt

Many thanks!

In reply to: Sheet Press Mould Oven

16/05/2019 at 06:48

Jason, for a sheet/panel maker that we were prototyping, we tried out this ‘Roxul’ Mineral Wool/Foil Backing High Temperature Insulation https://www.grainger.com/product/19NE81

In reply to: Sheet Press Mould Oven

17/05/2019 at 16:50

Thankyou for the input 🙂

In reply to: Sheet Press Mould Oven

17/05/2019 at 19:58

We made a prototype of the proposed door mechanism for version V4.2. of the oven.

Feedback would be appreciated!

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