Manual Shea Butter Press
A bridge press with a screw jack that squeezes oil from roasted, ground shea kernels — cutting hours of hand-kneading and raising yield per basin.
- Estimated cost
- $150 – $350 in steel and a jack
- Skill level
- Advanced
- Time
- 3 – 5 days fabrication
Not yet verified
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Tools
- Welding set and grinder
- Drill press
- Spanners
- Steel rule and square
- Clamps
Short a tool or material? Builders below have often swapped something local in — read Local adaptations before you buy anything.
Materials
- Channel and angle steel for a bridge frame
- 10 – 20 tonne bottle jack or a hand-cut screw
- Perforated stainless cage and follower plate
- Food-grade collection tray and spout
- Bolts, base plate and paint
Dimensions & cut list
A screw-type bridge press for shea or other oilseeds, 15–25 kg of paste per pressing. These are the reference sizes from Appropedia / shea processing and small-scale oil press builders — scale them to what you have, but keep the ratios.
| Cage barrel | 250 mm diameter × 400 mm tall |
|---|---|
| Cage slots | 3 mm wide, vertical, at 25 mm spacing |
| Screw | 32 mm square-thread, 500 mm long, 6 mm pitch |
| Bridge frame steel | 75 × 50 mm channelUndersized frames bow before the cake is dry — do not thin this down |
| Handle bar | 1.2 m of 25 mm pipe |
| Oil collection tray fall | 1:20 to the spout |
Take this list to the yard
- 4 mSteel channel for the frame
- 1 set32 mm screw and matching nutSalvaged jack screws work well
- 1.5 m²5 mm plate for the cage and pressing plate
- 2Perforated liner plates
- 1Food-grade collection bucket
Step by step
Step 1 of 6
Build a rigid bridge frame
Two uprights, a heavy top beam and a base plate, all fully welded. Any flex under load shows up as a bent follower and lost pressure.
Swipe or use arrow keys
1. Build a rigid bridge frame
Two uprights, a heavy top beam and a base plate, all fully welded. Any flex under load shows up as a bent follower and lost pressure.
2. Make the cage and follower
Roll a perforated stainless cylinder that fits the base with a small clearance, and cut a follower plate that slides freely without jamming.
3. Mount the jack and ram
Centre the jack under the top beam with a hardened pad, pushing the follower straight down. Off-centre loading is what breaks these presses.
4. Fit the drainage tray
Collect all runoff into a sloped food-grade tray with a spout to a clean vessel. Stainless or food-grade plastic only — mild steel taints the butter.
5. Prepare the paste correctly
Kernels must be dried, roasted and ground to a smooth paste, then warmed. Pressing coarse or cold paste gives poor yield no matter how much force you apply.
6. Press slowly in stages
Load the cage, press gradually, pause for the oil to run, then press again. Two or three slow stages beat one hard squeeze every time.
Why mine failed
The ways this build usually goes wrong, and what fixes it.
Little oil comes out under full pressure
CausePaste not roasted and kneaded enough before pressing
FixRoast, mill and knead the kernels to a smooth warm paste first. The press only separates oil that the processing has already released — cold, gritty paste holds onto it.
Cage slots blind up and pressure builds with no flow
CauseFines packing the slots
FixLine the cage with clean coarse cloth and clean the slots after every pressing. Widen slots no more than 3 mm or you push solids into the oil.
Frame bows and the screw binds
CauseFrame steel too light
FixStep up to 75 × 50 mm channel and add a cross-brace under the bed plate. A bowed frame will eventually fail explosively — retire it, don't shim it.
Safety notes
- A loaded jack stores enormous energy. Never stand over the ram, and inspect welds before each session.
- Fit a mechanical stop so the follower cannot be driven out of the cage.
- Roasting and warming paste is a burn risk — long sleeves and proper tongs.
- Keep every contact surface food-grade and cleaned between batches.
Source & attribution
This plan is our build-step write-up of work documented by Appropedia / shea processing and small-scale oil press builders. The original design and documentation belong to them — go read the source before you build.
Oil pressLocal adaptations
What builders changed to make this work where they live.
- No adaptations shared yet for this plan.
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