Drafting Arm
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Informacje o modelu
- Źródło
- Printables
- Kategoria
- 2D Plates & Logos
- Licencja
- Creative Commons — Attribution — Noncommercial
This is a drafting arm that I made a to make technical drawings. the main bearings I used was F688 bearings that I got from Creality printer tensioner bearings, but F625 bearings from the V-wheels from Creality printers also work. There's 2 per wheel so you would need at least 4 wheels total for the joint. The rods can be as long or as short as you want but I made it with 250mm and does a good job of getting everywhere you want on a paper about 12 x 9in. I had problems of joints rubbing on my desk, so I made casters to roll around intend of drag around
BOM
8 x 250mm Harden Steal Rods
8 x 40mm Harden Steal Rods (for Ruler Holder V1)
8 x F625 Flanged Bearing or 8 x F688 Flanged Bearing (for joint)
2 x MR104 Bearing (for caster wheels)
4 x F696 Flanged Bearing (for caster wheels)
12 x M3 x 10mm (to hold the rods in the joints)
2 x M3 x 35mm (for Ruler Holder V3)
2 x M4 x 20mm (for caster wheels)
2 x M4 x 6mm (for Desk Mount M4 Screws)
2 x M4 Nut (for Desk Mount M4 Screws)
8 x M5 x 25mm (to hold the joints to each part)
2 x M5 x 20mm (for caster wheels)
Updates
11/19/25
Made the CAD link a public document in Onshape
Added a new option for a ruler holder so you don't need the 40mm harden rods and just need 2 x M3 x 35mm screws
Added a right and left ruler holder
11/20/25
Added new desk mount with a printed screw that fits a wide variety of desks
Organized the files
11/29/25
updated the descriptions and the BOM to match the parts better