Hello all,
First of all, I am very very happy to find the OSE project. I will also make a donation soon.
I know your goal is to produce industrial machines, but I believe that it's at least equally important to produce open source home appliances.
Creating such appliances can be a good start, as they can be easier to design, to promote and to sell, therefore generating quick revenue for designing more complicated machinery.
In my case, I have 3 coffeemakers that have the pots broken. I can't replace the pots because I simply can't find others to buy.
So I have to buy another 3 coffeemakers, that cost 25 euros each, while the pots should cost only 2 or 3 euros each. The manufacturers change the size and shape of the pots each year, and they won't sell the pots separately, nor any other component of the machines.
If you (or, well - we) produce such appliances and sell them, and also sell the parts, then the people will be able to repair their appliances easily, buying only the parts they need.
Also, such an approach can create a chain of small shops with 3d printers. When you need a plastic component for your appliance, you can buy it or you can go to the shop at the corner of the street and print the component that you need, just giving the URL with the model of that part. Exactly like you can make a photocopy for documents, you will be able to copy a part of your appliance. It's more likely that the people will go to such a shop, instead of buying a 3d printer on their own. The same happens with documents - average people don't buy a photocopier on their own.

You should not buy another washing machine if a door, a plastic button, or a small metal sheet cover is broken. You should have the opportunity to simply replace those components.
The approach would also reduce waste and improve recycling a lot.

It will also greatly help to reduce poverty.
People in the poor countries can hardly (or never) buy a washing machine, a fridge and other basic appliances. But with an open source approach, they will be able to start their own small companies that produce parts. Also, they will be able to buy them, paying a price related to the income of the workers in their countries (lower income -> cheaper products). What happens today is: they work cheap to create home appliance for western companies, and they can never buy them, as they are sold at prices tailored for western consumers.

Please think about it. It will be a big step forward for the humanity. I am available to help with everything I can. I already tried to convince others about this idea. I sent mails to Bill and Melinda Gates Foundation, Google.org, and other foundations that claim they want to improve the world. I am not even sure if they have read my messages.
It's very important not only to design the appliances, but also to make them available to buy, and to make the parts available to buy. It will take time until the people will understand they can produce the parts on their own. Until then, the availability of the parts will make them get used with the concept. Also, each component can be done with lower or better quality. Producing components at a high quality can ensure a market share and keep the sales going and generate continuous revenue. For example, there are many companies that produce keyboards, but companies Logitech still sells good even basic keyboards, simply because they have better quality. Even the smallest piece of plastic can be done in a better quality than another. Therefore, it is possible to have a significant market share even with fierce competition and with open specifications.

If you will start doing home appliance and sell them to the people, then I'm available to donate even 1.000$ for that. Just because I know that's the next step for the progress of humanity, and I can't miss the opportunity to have a contribution into making it happen. I don't need a share into a future company that produces the appliances, I just want to have the opportunity to buy open source appliances and components, as a regular consumer - that's more than enough for me.
I hope you can get more funding and I'm really sure you can make a profitable enterprise by making open source machines.
There are much more people that need home appliances than the people who need tractors, bulldozers, bakery ovens, furnaces, and so on.
Therefore you can generate cash much faster by starting with home appliances. And not only cash - you will attract attention very fast, and that's even more important than money.
I think the philanthropists, charities and foundations that want to reduce the poverty in the world should be interested to support you with funds, as open source appliances will greatly reduce poverty in the world.

I will support you anyways, even if you won't bother creating home appliances. Because I know the more successful your project will be, the more chances will be to inspire others to create home appliances too.

Please excuse me for writing such a long message, I hope my input was useful though.