BigTreeTech TFT70 Swivel Mount (2020, 2040, 4040 or 3030 Extrusion)

thingiverse

BIGTREETECH TFT70 Mount with Swivel and Angle Adjust. Currently mounts on 2020 or larger extrusion systems. Extremely sturdy and ideal for Cube style printers, Core XY machines, etc., where side extrusions or other mounting locations exist. Edits: 201007 - Added a 3030 Extrusion Spaced Rear mount. 200805 - Added an easy print arm (TFT70 - Arm Upper Easy Print) for those who dislike using supports. Prints very easily without supports. 200728 - Updated the extrusion mount bolt pitch to 20mm to accommodate 2020, 2040, 4040 or larger extrusions. Introduced a horizontal adapter as many users are mounting this to the base of Cartesian printers. Updated the tilt mount for the arm to include a keyway for the adapter to maintain position. BOM: Printed parts: -Front Fascia (Front Panel) -Rear Mounting Plate (Rear Panel) -Angle Adjust Mount (Rear Mount) -Swivel Adjust Mount (Tilt Mount) -Lightweight Swivel Arm (Arm Upper) -Extrusion Mount (Tilt Mount 2020, 2040 or 4040 or larger) -Horizontal Adapter (to mount to a horizontal 2020) Fasteners: 4x M3x18mm (Rear Panel to Front Panel, TFT70) 2xM4x12mm (or 10) (Extrusion Mount to Printer Frame) 2x M4x15mm (or 20) with (Angle Adjust to Rear Panel) 3x M5x50mm (Acting as the Axles for the Angle Adjsut, Swivel and Extrusion Mount locations) 4x M4 T Nuts (Angle Adjust Slots and Extrusion Mount) 3x M5 Nuts 1x Additional M4 Screw and Nut if using the horizontal mount adapter The front fascia prints without any support directly on the bed. No fasteners are required for this. The front mount has a cutout for the rotary encoder, reset switch, and the TFT 70. It also features a lip around the edge that mates against the rear panel, with bosses for the TFT to mount. The Rear Mounting Plate prints without supports directly on the bed. This plate has strengthening ribs, cutouts for connectors, 4 TFT 70 mounting locations, and a set of mounting locations for the rear angle adjust mount. The 4 mounting bosses print without support, bridging the hole. Passing a screw through will knock out the sacrificial bridging. The Angle Adjust Mount locations are 3 layers thick and can be punched out or removed by passing a 4mm drill bit through. This keeps the rear of the plate clean and allows users to select a mounting location based on preference and side (Left v Right for example). Fasten the Rear plate through the TFT70 into the front fascia, using plastic holes to create threads with 4x M3 screws. The Rear Angle Adjust Mount prints without any support, and the 2 rectangular slots will bridge fine. The slots hold 2x M4 T Nuts, and fastens to the rear of the Rear Plate with 2x M4 Button head screws. Note that this must be done before mounting the TFT and Front Fascia to the rear panel. The Swivel mount prints without any support, with the bottom of the mount flat on the bed. This part is directional, and mounts first to the Arm upper, then onto the Angle Adjust Mount. Both mount with M5 bolts and M5 recessed nuts. There are two arms. The truss Arm Upper needs supports due to its curvature. It's best to print the beam with the 'webs' flat on the bed, and use some support for the upper web. I have also created a simplistic Easy Print arm that prints without supports. The Extrusion mount is last and prints without any supports. This uses 2x M4 screws and 2x T nuts to mount to an extrusion. To mount this to the Swivel Arm, you need another M5 bolt and nut. If users wish to secure this to a horizontal 2020 or 2040, there is a small adapter that will allow securing 1 to the side and 2 to the top of the extrusion for stability. Adjust the tension in the M5 screws to increase or decrease friction in the moving components. Use appropriate washers and even grease where necessary, or if necessary to ensure the nuts don't unscrew. Nylocs help here too.