After installing and connecting the VP75 is ready for initial commissioning. The first few steps will prepare your VP75 for its day-to-day duty:
When the power supply is switched on the machine will boot automatically. Please wait patiently until the full operating screen is loaded on the touch screen at the machine front. The screen displays the Print screen and the top-left status message reads Idle.
First, filament must be fed into the machine:
INFO
During pushing the filament through the hose you may hit some resistance. This is when you reach the inlet bushing into the build chamber and at the reducer from 4 to 2 mm diameter of the hose. Simply pull back the filament a few centimetres and push again until you find the strand run freely again.
After material has been loaded the next step is priming the print head to ensure good filling of the nozzle.
You will find all necessary installation and setup procedures required for the first production in the following paragraphs. All software mentioned additionally is available “Open Source”.
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Kühling&Kühling recommend using the stated software. Using other software is up to the user but the manufacturer cannot be held liable for any malfunction resulting from use of other than the recommended software.
First you need to install a slicing software on your computer to translate .stl-files (Surface Teselation Language - a 3D format with triangulated surfaces needed for processing) into printable G-codes.
Kühling&Kühling recommend using the Slic3r slicing software to prepare your digital 3D models for printing. This slicing software provides a lot of features necessary for achieving optimal results with the VP75 and has been thoroughly tested. Other software may be available but has not been tested.
To prepare for printing follow these steps:
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After installing Slic3r it is mandatory to switch into “Expert” mode before further plunging into utilization (described in the Slic3r manual).
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When importing profile bundles into Slic3r, existing presets may be overwritten. It is recommended to backup your custom/modified presets by exporting them as a bundle first (File > Export Config Bundle).
The 3D model you want to print must be available as an .stl-file. Most common 3D modeling software is able to create this file format.
Upload the G-code to the machine via the web interface as described in Queue.
Make sure that all previously described steps have been carried out.
The next steps are carried out at the operating screen:
If everything has been fault-free, delete the part file from the queue - you are ready to proceed to production.
DANGER OF BURNING!
The build plate and the build chamber heating resistor are not being switched off after a manufacturing process. Also, the extruder nozzle may still be too hot to the touch. Be careful not to burn yourself when removing the build plate.
NOTICE
To avoid scratching do not use pointed tools (e.g. screwdrivers) to remove the object from the build sheet.
If residues of the print material remain on the build sheet, use a very sharp, flat mounted blade to scrape the surface clean.
Scratches in the build plate's surface may lead to enforced adhesion of prints. Severely scratched or broken build sheets can no longer be used for production and must be replaced.
To remove objects from the build sheet let it cool down to room temperature; larger parts should remain in the switched off build chamber until cooled down.
With materials suited to being printed on PEI the part will loosen itself from the build plate when cooling due to shrinkage which can be heard by the crackling noises. If otherwise, twist and bend the build plate until the object comes free.
Find more information about the properties and handling of the PEI build sheet in the parts description of this manual.