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Sliding-Bar Air-Tube Dasher Churn: Churn Low, Then Raise the Bar and Turn Back to Gather
Millie

Creado por

Millie

7. octubre 2026NL
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Sliding-Bar Air-Tube Dasher Churn: Churn Low, Then Raise the Bar and Turn Back to Gather

William H. Truesdell of Elgin, Illinois, received US 18,936, dated 22 December 1857, for a dasher bar that slides on the upright shaft, with an inclined board and an air tube at each end. It churns near the bottom; then it is raised to the surface and turned gently back, "the inclined boards forming chambers" to gather the butter. This rung prints the dasher bar, collar, step and gears, builds the churn and makes butter.
Intermedio
About 4 hours, plus printing

Instrucciones

1

Down to churn, up to gather

Cargando el cuaderno de Jupyter…
2

Lifting to gather, before it

Dickinson lifts his breakers to gather; Truesdell lifts the whole dasher bar to the surface.
3

Read US 18,936

"After the butter is produced, the bar D is raised to the surface, or nearly to the surface, of the cream and is supported in proper position by the pin (h) which is inserted in the shaft B below the collar (g). By turning the shaft B, gently in a reverse direction the butter will be collected, the inclined boards (i) forming chambers to receive it."
4

Print the parts

Print the dasher bar with its inclined boards, the collar, the step, the crown wheel, the pinion and the standard. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.

Materiales para este paso:

Filamento PETGFilamento PETG1 pieza

Herramientas necesarias:

Impresora 3D de filamento (FDM)Impresora 3D de filamento (FDM)
5

Print the dasher bar

The dasher bar, printed as step 4 describes.
Archivo de DisenoSTLCC0 - Free
6

Print the collar

The collar, printed as step 4 describes.
Archivo de DisenoSTLCC0 - Free
7

Print the step

The step, printed as step 4 describes.
Archivo de DisenoSTLCC0 - Free
8

Print the crown wheel

The crown wheel, printed as step 4 describes.
Archivo de DisenoSTLCC0 - Free
9

Print the pinion

The pinion, printed as step 4 describes.
Archivo de DisenoSTLCC0 - Free
10

Print the standard

The standard, printed as step 4 describes.
Archivo de DisenoSTLCC0 - Free
11

Bar, tubes and collar

Glue an 8 mm food-grade tube into each socket so its top stands above the cream, slightly inclined. Slide the bar onto a 10 mm square hardwood shaft standing in the step in a round food-grade container. Hang the bar from the collar by four 3 mm stainless rods, and drill the shaft for a pin under the collar at the churning and the gathering heights.

Materiales para este paso:

Tubo de PVCTubo de PVC1 pieza
Epoxi de dos componentesEpoxi de dos componentes1 pieza
Espigas de madera duraEspigas de madera dura1 pieza
Recipiente de almacenaje de grado alimentarioRecipiente de almacenaje de grado alimentario1 pieza
Redondo de acero dulceRedondo de acero dulce1 pieza

Herramientas necesarias:

Sierra para metalesSierra para metales
Taladro inalámbricoTaladro inalámbrico
Juego de brocasJuego de brocas
12

Lid, gears and crank

Fix half the lid with a hole for the shaft, the pinion on its top and the standard with the crown wheel meshing it; screw a dowel handle into the wheel.

Materiales para este paso:

Redondo de acero dulceRedondo de acero dulce1 pieza
Espigas de madera duraEspigas de madera dura1 pieza
Tornillo para madera n.º 8 x 1"Tornillo para madera n.º 8 x 1"1 pieza

Herramientas necesarias:

Juego de destornilladoresJuego de destornilladores
Taladro inalámbricoTaladro inalámbrico
13

The build in 3D

FreeCAD model of this build: the container cut away to show the dasher bar low on the shaft with its inclined boards and air tubes, the collar and rods above, and the crown wheel and pinion.
Archivo de DisenoBLENDCC0 - Free
14

Churn low, gather high

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 2 litres. With the bar low, crank steadily; time until the butter comes. Raise the bar to the surface, pin the collar there, and crank gently the other way to gather the butter. Pour off the buttermilk, add cold water, churn a little and pour off again until it runs clear; work in a pinch of salt and weigh the butter.
Paso 14 - Image 1

Materiales para este paso:

Crema de leche espesaCrema de leche espesa2000 ml
Sal marina gruesaSal marina gruesa1 pieza
AguaAgua1 pieza

Herramientas necesarias:

Termómetro de sonda permanenteTermómetro de sonda permanente
CronómetroCronómetro
Báscula digital de cocinaBáscula digital de cocina
Bol grande de acero inoxidableBol grande de acero inoxidable
15

Troubleshooting

Sliding-bar churn troubleshooting.

Flow

Loading...
16

History and honest limits

**William H. Truesdell** of Elgin, Kane County, Illinois, US 18,936, 22 December 1857. He did not claim bringing air into the cream, nor adjusting dashers broadly; he claimed the bar and its inclined boards that let air in turning one way and form chambers to gather the butter turning the other. Printed parts and a container stand in for his. FDM prints hold food in their layer lines, so wash well and replace when worn.

Materiales

10

Herramientas requeridas

9

Archivos de diseño

7

CC0 Dominio público

Este Blueprint se publica bajo CC0. Eres libre de copiar, modificar, distribuir y usar este trabajo para cualquier propósito, sin pedir permiso.

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