Safety

Let's start with a word of warning: Lasers are dangerous. High voltage (240V) is dangerous. If you look at the license the modules are licensed under, you will notice that they are provided "as is" and without any warranty. This is no joke. If you use this documentation, make sure you know what you are doing and take appropriate safety measures yourself. The finished device is designed to be safe (but again, not warranty, we do not guarantee anything), while building it, you can be exposed to high levels of laser radiation and deadly voltages. While working on the device, you should

• Never power it on, if any contacts with mains voltage are touchable
• Never power it on without wearing laser safety glasses. There are three wavelengths involved, so they need to shield all of them: 1024nm, 808nm and 532nm
• Also, do not put others at risk. 

This is just a friendly, uncomplete reminder. Again: no warranty. Read the licenses for legal details. Consult experts for laser and electrical safety.

Modules

The device consists of several modules, which can be used not just in the Laser4DIY, but also in other setups. They are therefore documented separately. The modules are:

• XY table
• Supply unit
• Enclosure, including safety circuit
• TEC Controller
• Laser Diode Driver
• Laser Source

The assembly guide will reference the documentation and source files (open hardware, baby!) for all of these modules, but also describe specifics when used in a Laser4DIY device.

Tools Needed

We assume that you have access to standard tools like screw drivers, allen keys, files and similar. Apart from these you need the following tools

• Laser power meter (specs: todo)
• Laser IR viewing plate
• Laser safety glasses (blocking 1024nm, 808nm and 532nm, details TODO) 
• (work in progress)

General Notes

The following notes should be considered for all modules:

• CAD files are provided for some of the modules. These are included to guide the assembly, an in-depth, step-by-step assembly guide is not (yet) provided. The CAD files are included in the github repository, in STEP format. This format can be loaded by most CAD packages, including the open-source software FreeCad. There is also a free viewer called STP viewer.

The following notes should be considered during assembly for all modules:

• Again: be cautious! Follow standard guidelines for laser and electrical safety
• Whenever a standard (non lock) nut is used, apply thread locker/sealant to secure it
• (work in progress)

Feedback

If you encounter issues in the documentation or the source file, please report it to the development team:

• For issues concerning source files in any of the GitHub repositories, please use the GitHub issues feature to submit a ticket for the corresponding repository
• For issues concerning documentation in this Wiki, please submit a ticket at the Assembly Guide Github repository.

Assembly

Module: XY-Table

For building the XY table please see the documentation at Laser4DIY Low Profile XY Table. It includes also notes for the assembly.

(to be continued)