Cold-Brew Tower

Cold-Brew Tower

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Apparatus for the two-stage filtration of cold coffee, Rev. BLab-notebook plate of a wall-mounted cold-brew tower: a 1 L perforated-plate funnel with a mesh disc drains through a Vigreux column into a 125 mL separatory funnel, which meters coffee into a 500 mL funnel with a paper disc over a 1 L round-bottom flask under gentle vacuum. Printed yokes on two dowel posts, cleat-hung backboard.Apparatus for the Two-Stage Filtration of Cold Coffeewall-mounted · Rev. BABCDEHIKJFGslurry ingrounds bed ≈ 5 cm100 µm mesh / 1.5 mm platevent, openVigreux, 24/40Keck clips (24)stopcock: D half full70 mm paper−0.2 barto pumpcleat (behind)overall ≈ 1125 mm (44 in)A’s rim to shelf 1009 mm235 mm board (1×10)wallFrench cleat, 45°top bracket, PETGmid tie (optional)ring seat19 mm post holescounter90A's rim ≈ 1.03 m above counter200 c-cfrontØ19.4 bore(¾″ dowel)M5 thumbscrew+ heat-set insertseat Ø90 → Ø32cork / TPU liner18 mm stem slotsplit collarno mesh100 µm mesh1.5 mmglassplategrind0.2–0.5 mmReferences to Fig. 1A.Charging funnel, 1000 mL. 1.5 mm perforated plate, 100 µm mesh disc.B.Vigreux column, 24/40, 200 mm.C.Separatory funnel, 125 mL, PTFE stopcock.D.Büchner funnel, 500 mL. Perforated plate, 70 mm paper.E.Round-bottom flask, 1 L, 24/40, printed ring seat.F.Vent arm, silicone tube, pinch clamp.G.Vacuum line, tee, gauge.H.Yokes, PETG. Split collars, M5 thumbscrews.I.Posts, ¾ in. (19 mm) hardwood dowel.J.Shelf, 190 mm deep, 19 mm post holes.K.Backboard, 1×10 (235 × 19 mm), 45° French cleat.Notesvacuum on D onlyA ≈ 1 L above plate; pour in 2rinse B after each runall joints 24/40, Keck 24A → C direct: −16 cmCold-brew tower, Rev. BDrawn23 Sept 2026Unitsmm; Fig. 1 to scaleGlassStonyLab, QWORKSheet1 of 1050100150200mm, at Fig. 1 scaleRun135 g / 1 L, fine, 18 h → A in 2 pours → first 150 mL back over bed→ C set to half-fill D → −0.2 bar → EFig. 1. — Front elevation, 1 unit = 1 mm.Fig. 2. — Side elevation, ½ scale.Fig. 3. — Yoke H, plan. PETG.C ring Ø44 · D cup Ø76Fig. 4. — A’s plate in section, 20×.