Tabletop Drill Press

thingiverse

This is a remodeling of the PCB Drill Press by Geminy_Studio, designed to utilize a 775 motor for greater travel range. A larger travel range allows for more effective use of the motor. I have included small holes that serve as guides to drill 2mm holes in the handle shafts, which are then used with 2mm rods as joiners rather than glue. The 2mm rods were previously known to shatter under excessive force, so I made them slightly stronger; however, it is still advisable to use some glue alongside the 2mm rods for added security. Room has been allocated within the design for a 3/4" x 2.5" spring to serve as the return force. Despite this, I am not entirely satisfied with how this feature works. One issue encountered was the rack detaching from the pinion due to excessive travel, which prompted me to include a stop mechanism to prevent the pinion from rotating beyond a certain point and thus locking the rack at its maximum height. Ideally, I would have liked more range of motion and a steadier restoring force rather than an increasing spring force. To compensate for this shortcoming, I added room in the top to accommodate a bearing that holds the M8 threaded rod securely in place. This enables fast access with a power drill to quickly raise and lower the drill on the guide rails. There are holes within the base designed for a 9mm DC barrel jack for power input as well as a potentiometer knob from a PWM power controller. The design also includes spaces for heat-mounted M3 threads, and all covers feature countersunk holes for M3 screws. The motor fits snugly into its mount but may feel fragile during installation; however, proceeding slowly should prevent any damage. Similarly, joining the rack with the motor mount requires care to avoid shattering it. I was able to join them together with minimal filing using a vise and some patience. I have addressed as many issues as possible related to printing, post-processing, and assembly but may have inadvertently overlooked certain smaller details. If you have any questions regarding parts used or assembly, please leave a comment for clarification, and I will respond promptly. Some components may require rotation into a more optimal printing position since I am uncertain about their original orientation during export. Utilize common sense when orienting the parts to ensure smooth printing.