Floorboard to Joist Drill Guide - Parametric - Openscad

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This is my Floorboard to Joist Drilling Guide. It helps you make repeated drilling of holes to joists as good as practically possible. Previously, I used just cardboard as a guide. It also acts as a spacer element from floorboard to floorboard. IMPORTANT! To note the guide does not eliminate screwing into pipes - If pipe networks are not straight or off center and full of surprises. Check before using this guide. It's not a hard and fast guide! To use the guide, enter the joist dimensions in the OpenSCAD file and floorboard dimensions. This gives you a visual model. Floorboard dimension entry here is imperial while joist is metric. All other calculations are metric. Now modify floorboard_hole_inboardx_mm and floorboard_hole_inboardy_mm and floorboard_hole_pitch_mm to suit. Adjust guide hole (GUIDE_HOLE_mm) to suit. I found using a bradawl to mark holes before drilling was better in actual usage. Finally, modify GUIDE_ENDSTOP_THICKNESS to suit. 2mm works well, but older boards have larger gaps up to 4mm. There are two models you can produce from this file: one with basic end stop and the other with a cross bar (see pics). To change, modify centerbars = yes or no. It is best to print both versions in actual use. I have provided example STL models of one with endstop and one with crossbars for 2mm spacing. Finally, to print the model, you need to flip it in Z axis. Usage Notes: The indentations are used for centering to a pencil mark. (Works best on basic endstop version) In actual use, I found it was best to mark the holes with a bradawl before drilling anything. Also, it is best to print both versions (End stop and Center bars). Other applications: You could also use this for decking and any other repeated drill patterns from any edges. OpenSCAD file included.