This is a 3D printed 18v Rigid tool to Milwaukee M18  battery adapter.  This allows you to use your Rigid tool with a Milwaukee battery.  There are no modifications needed to the tools and NO assembly for the adapter it is completely ready to use.  I do not own all the rigid tools so I can't say it works with all of them but I have listed the ones I know it works with for sure if there are tools that it doesn't work with please send me a message so I can address or add it to a list of known issues.   

Tools I have tested and works:  R86008 1/2in drill, R84015 1/2 in drill,  R864, R844 Sawsall, R849 flashlight, R865 Circular saw, vacuum but panel will not close see pictures, and R0230 Air compressor but you need two adapters. After using the circular saw I have found that you lose depth of cut with different battery sizes.  With 2.0 battery not affected.  With 5.0 battery depth of cut is reduced from 2" to 1 3/4" and for the 9.0 battery it is reduced from 2" to 1 7/16".  I am trying to see if there is away around this but at the moment I haven't figured anything out.  

This listing is just for the adapter no batteries or tools are included.