Assembled Hand Drill.jpg
Device data
Manufacturing files
Project data
Authors Mike Hartl
Completed 2015
Made? Yes
Replicated? No
Cost USD $ 5
Export to Open Know How Manifest
Page data
Type Device, Project
Keywords 3D printing, construction, hand drill, tool, drill bit, plastic
SDGs Sustainable Development Goals SDG08 Decent work and economic growth
Published by Mike Hartl
Kathy Nativi
Published 2015
License CC BY-SA 3.0
Affiliations Michigan_Tech's_Open_Sustainability_Technology_Lab
Language English (en)
Page views 651

This is a 3D printable hand drill which can be used to drill holes in any soft material such as wood. This design is based largly of old antique hand drills seen here.[1] This drill is almost completely 3D printable aside from the drill bit.

Bill of Materials[edit | edit source]

  1. PLA or ABS Filament (1.75mm)
  2. All of the STL files are here.
  3. Drill Bit OR
  4. Piece of flat metal to be used as drill bit (~3mm X ~10mm X ~75mm)

Tools needed[edit | edit source]

  1. MOST Delta RepRap or similar RepRap 3-D printer
  2. Knife/Exacto Knife
  3. Soldering iron (optional)
  4. File/Grinding device/knife sharpener/rough stone/similar object
  5. Flame creating object (ex: candle/lighter/burning stick)

Assembly Instructions[edit | edit source]

Drill Bit[edit | edit source]

  1. Use a file or other abrasive material to file a point on piece of metal to be used as the drill bit
  2. Add re-leaf angels to the back side of the taper
  3. Exact angles are not necessary but try to keep the drill bit symmetric

Drill[edit | edit source]

  1. 3D print all of the pieces
  2. Assemble all of the pieces as shown
  3. Use a small amount of 1.75mm filament to fasten the parts together
  4. Use soldering iron to secure filament in place this will prevent the drill from falling apart
  5. If a soldering iron is unavailable heating the end of the drill bit with or other piece of metal with a flame will suffice
  6. It is recommended to not completely secure the drill bit adapter.(this allows to easily change bits with out the need of a new drill)

Installing the drill bit[edit | edit source]

  1. Use a flame of some sort to heat up the back end of the drill bit hot enough to melt plastic
  2. Carefully align the rill bit with the opening in the bit adapter
  3. Firmly insert the HOT drill bit into the bit adapter
  4. NOTE: the plastic in the bit adapter should melt and deform as the bit is inserted
  5. Hold Dill bit sturdy until the plastic becomes firm
  6. Allow the drill and drill bit to completely cool before use

Cost savings[edit | edit source]

  • If your solution is not a low cost one then it is not really appropriate.
  1. Estimated Cost About $5
  2. Typical commercially $35[2]

References[edit | edit source]