{"id":56165,"key":"Delta_Pilot_Holes:MOST","title":"Delta Pilot Holes:MOST","latest":{"id":1217337,"timestamp":"2025-12-16T15:50:06Z"},"content_model":"wikitext","license":{"url":"https://www.appropedia.org/Appropedia:Copyrights","title":"CC-BY-SA-4.0"},"source":"{{MOST}}\n\n{{MOST-RepRap}}\n\n== Materials and Tools ==\n\n{| style=\"margin:auto\"\n|- style=\"vertical-align:top;\"\n| [[File:MOST pilot hole material.JPG|thumb|400px|alt=Pilot hole materials|Material required to drill pilot holes.]]\n\n{|class=\"wikitable\" style=\"margin:auto\"\n|+ Materials\n! Description\n! Count\n|-\n| 240mm x 42mm plywood linking board\n| 6\n|}\n\n|\n| [[File:MOST pilot hole tools.JPG|thumb|400px|alt=Necessary tools|Necessary tools for drilling pilot holes.]]\n\n{|class=\"wikitable\" style=\"margin:auto\"\n|+ Tools\n| 2mm drill bit\n|-\n| Drill motor\n|-\n| Sharp pencil\n|-\n| Right side pilot hole template\n|-\n| Left side pilot hole template\n|}\n\n|}\n\n== Note ==\n\nLinking board mounting screws are located in difficult-to-reach locations and pilot holes greatly simplify assembly of the motor and idler ends. Pilot holes may be drilled in other wooden structural components and those will be treated in their respective assembly steps.\n\nTo minimize swelling and shrinking due to changes in humidity, sealing the plywood is recommended.\n\n== Procedure ==\n\nSee video instructions on [[Delta Motor End Assembly:MOST|Motor End Assembly]].\n\n# There are two linking board pilot hole jigs for accurately locating the positions of pilot holes. One each for the left and right sides of the boards. Ream the holes in the triangular pattern with a 3mm (1/8\") drill bit.\n# [[File:MOST Delta mark linking board.JPG|thumb|Marking one edge of the boards.]]Stack the linking boards so that their edges are up and mark that edge with a pencil.{{Clear}}\n# [[File:MOST Delta linking jig.JPG|thumb|Marking linking board pilot hole locations.]]Place one of the pilot hole jigs on the end of a board with the marked edge of the board on the same side as the narrow stop at the bottom of the jig. Push the board firmly into the jig and with a sharp pencil, mark the location of the pilot holes. Repeat with the other jig on the opposite end of the board ensuring that the marked edge is towards the bottom of the jig.{{Clear}}\n# Repeat with the remaining linking boards.\n# [[File:MOST Delta drilling pilot linking.JPG|thumb|Drilling linking board pilot holes.]]Drill 2mm (1/16\") pilot holes at the marked positions on each board being careful to not drill all the way through the board.{{Clear}}\n\n[[File:MOST Delta drilled linking.JPG|400|center|Linking board with pilot holes.]]\n\n== Navigation ==\n\n{{MOST Delta navigation}}\n\n{{Page data\n| license = CC-BY-SA-3.0\n| description = Drilling matters in 3D printing. Appropedia’s guide to Delta pilot holes helps builders get smooth, clean results.\n}}\n\n[[Category:MOST methods]]\n[[Category:3D printing]]"}