This is my "Hello World" Customizer thing. We use wedges like these to block open doors like a doorstop or at the hinge. Two wedges can be pushed together inside the frame of a sprinkler head to shut off the (copious) flow of water. Not sure if ABS is up to the stresses of closing a sprinkler head - I guess I will have to test. Print it in a bright color so that you don't lose it on the fireground. Add your own initials or employee number. I printed dozens of hand-customized wedges for my buddies before I figured out how to parametrically create the same thing using OpenSCAD. This is currently designed only for the Black Rose font. I am not delighted with the font, but it is a nice change from blocky Tinkercad letters. I will be figuring out how to munge other fonts onto the shape appropriately. If you have suggestions about how to brute-force text onto shapes, I am all ears. Work in progress. Stay tuned, based on http://www.thingiverse.com/thing:43931 ATTENTION This work is licensed under the Creative Commons - Attribution - Non-Commercial license. This license applies only to the files and documents available for download from the Thing Files section of this Thing. All other related content (photographs, videos, and verbiage such as contained in "Description" or "Instructions" ) are excluded from this license. with all rights reserved, unless specifically available for download This notice constitutes a clarification, not a change, to licensing for this design. To date, the only parameters you can change are the size of the hole and the lettering. You can fit more letters in lower case. Your wedge will have the same letters and/or numbers top and bottom. Interestingly, in the OpenSCAD script, I could not get numbers to render properly with Write.scad until I converted them to a string with str(). I haven't commented that in the code yet, so I am putting it here for now. If you have an interest in affecting other parameters, let me know! Thanks schlem