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
- PLA or ABS Filament (1.75mm)
- All of the STL files are here.
- Drill Bit OR
- Piece of flat metal to be used as drill bit (~3mm X ~10mm X ~75mm)
Tools needed
- MOST Delta RepRap or similar RepRap 3-D printer
- Knife/Exacto Knife
- Soldering iron (optional)
- File/Grinding device/knife sharpener/rough stone/similar object
- Flame creating object (ex: candle/lighter/burning stick)
Assembly Instructions
Drill Bit
- Use a file or other abrasive material to file a point on piece of metal to be used as the drill bit
- Add re-leaf angels to the back side of the taper
- Exact angles are not necessary but try to keep the drill bit symmetric
Drill
- 3D print all of the pieces
- Assemble all of the pieces as shown
- Use a small amount of 1.75mm filament to fasten the parts together
- Use soldering iron to secure filament in place this will prevent the drill from falling apart
- If a soldering iron is unavailable heating the end of the drill bit with or other piece of metal with a flame will suffice
- 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
- CARE SHOULD BE TAKEN WHEN HANDLING HOT OBJECTS
- Use a flame of some sort to heat up the back end of the drill bit hot enough to melt plastic
- Carefully align the rill bit with the opening in the bit adapter
- Firmly insert the HOT drill bit into the bit adapter
- NOTE: the plastic in the bit adapter should melt and deform as the bit is inserted
- Hold Dill bit sturdy until the plastic becomes firm
- Allow the drill and drill bit to completely cool before use
Cost savings
- If your solution is not a low cost one then it is not really appropriate.
- Estimated Cost About $5
- Typical commercially $35[2]
References
- ↑ Old Tool Heaven: Hand Drill Available: http://oldtoolheaven.com/hand_drills/drillimg/d2Alg.jpg
- ↑ typical Hand drill: Hand Drill Available: http://www.sears.com/schroder-heavy-duty-5-16-inch-rotary-hand-drill/p-00934094000P?sid=IDx01192011x000001&gclid=Cj0KEQiAnJqzBRCW0rGWnKnckOIBEiQA6qDBapP8w3DtMTMr1-xd6S4gqMdXAwy2psb5TihqM6AHFvIaAmaC8P8HAQ