Giuseppe Portelli

Currently I'm using 25 degrees celsius for PLA and 30 for PET-G.

It should work, just make sure to have two strips of equal length (equal number of LEDs) otherwise the voltage division won't be equal for both sides.

There is a knife gate air valve that I close when I'm not using the printer. As for the external vent, there is only a 3D printed protection grille, an vent flapper would be good.The air flow system purpose is to keep the optimal temperature for printing. You can do it manually by tuning the air extraction power. An automatic temperature control system would be a nice to have.

You can choose to open the upper air vent hole, in this way the air will flow well above the print bed. The purpose of the ventilation is to maintain an optimal temperature. For ABS you can pre-heat the bed and wait for the enclosure to reach the desired temperature before starting the print. During printing you can ventilate if the temperature becomes too high.

Yes, propellers are used as air flow indicators.I designed the first air vent on the bottom, then I realized I wanted the air to flow above the plate, and added the secondary upper air vent where I experimented a different design. Now I can choose to open one or both if I want more air.

Automatic control of the inner temperature would be nice to have. It would work better during winter because when the external temperature is high, it is very difficult to keep the internal below a threshold, at least with the current power of my air extraction system.

There is a nice and inexpensive technique to apply a foil to a sheet of paper. You first print your text using a laser printer. Then apply the foil using heat and pressure with a laminator or an iron; the laser printer ink will work as some kind of glue. Here we need to apply a foil to a bookbinding cloth, so we can't use a laser printer. You could create a stencil from the text and use it to apply some spray glue to the spine. Then attach the foil to the glue. But creating a stencil by hand is difficult if you don't use a cnc machine.Typographers use metal stamps and presses for this kind of work. But they usually work also with special printers for cheap book foiling. You could bring your bookbinding cloth to a typographer to apply the gold foil before cutting it to measure for your spi…

There is a nice and inexpensive technique to apply a foil to a sheet of paper. You first print your text using a laser printer. Then apply the foil using heat and pressure with a laminator or an iron; the laser printer ink will work as some kind of glue. Here we need to apply a foil to a bookbinding cloth, so we can't use a laser printer. You could create a stencil from the text and use it to apply some spray glue to the spine. Then attach the foil to the glue. But creating a stencil by hand is difficult if you don't use a cnc machine.Typographers use metal stamps and presses for this kind of work. But they usually work also with special printers for cheap book foiling. You could bring your bookbinding cloth to a typographer to apply the gold foil before cutting it to measure for your spine. It should be as fast and cheap as making a color print in a copy shop.