LIST
FEGURÐ OG VELLÍÐAN
HANDVERK
MENNING OG SAGA
SKEMMTUN
UMHVERFI
MATUR OG DRYKKUR
ÖFUGVERKFRÆÐI
VÍSINDI
ÍÞRÓTTIR
TÆKNI
KLÆÐANLEG TÆKNI
Double-Concave Perforated Disk Dasher: Two Tin Domes With Half-Covered Holes
YourGrandma

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YourGrandma

6. október 2026IS
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Double-Concave Perforated Disk Dasher: Two Tin Domes With Half-Covered Holes

Marsh improved the dasher of "the plain old-fashioned churns so long used by farmers generally." Joseph Marsh of Petersburg, Menard County, Illinois, received US 7,527, dated 30 July 1850, for a "double-concave perforated discoid churn-dasher": two convex pieces of tin or other suitable material, "perforated and placed on the upright," about six inches across with holes about three-quarters of an inch, "the several holes in B made to cover about half of the several holes in C." It works in a straight-sided churn by raising and pushing it, or by a lever. This rung works out the open area, then prints the two domes and spacer, fits them to a staff, and makes butter.
Byrjandi
About 1 hour, plus printing

Leiðbeiningar

1

Half-covered holes

Hleð Jupyter-vinnubók…
2

An improved common dasher before it

The embedded blueprint improves the common dasher with pitched oars. Marsh uses two perforated domes whose holes half overlap.
3

Read US 7,527

"The convex pieces of tin, as shown at B and C, are or may be six inches in diameter, and the several holes in the same about three-quarters of an inch in diameter, the several holes in B made to cover about half of the several holes in C."
4

Print the domes

Print the two domes: 152 mm across with 19 mm holes, the second turned so its holes half cover the first's. Print the spacer ring. Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.

Efni fyrir þetta skref:

PETG-þráðurPETG-þráður1 stykki

Nauðsynleg verkfæri:

FDM-þrívíddarprentariFDM-þrívíddarprentari
5

Print the first dome

The first dome, printed as step 4 describes.
HönnunarskráSTLCC0 - Free
6

Print the second dome

The second dome, printed as step 4 describes.
HönnunarskráSTLCC0 - Free
7

Print the spacer ring

The spacer ring, printed as step 4 describes.
HönnunarskráSTLCC0 - Free
8

Assemble

Glue the two domes back to back on the spacer ring, convex sides out, holes half overlapping, and glue them on the foot of a 12 mm hardwood dowel staff.

Efni fyrir þetta skref:

HarðviðartapparHarðviðartappar1 stykki
Tveggja þátta epoxýTveggja þátta epoxý1 stykki

Nauðsynleg verkfæri:

HandsögHandsög
SandpappírSandpappír
9

The churn

Use a straight-sided food-grade container about 160 mm across and 300 mm tall, so the dasher fits closely without rubbing, as he said. Drill its lid for the staff.

Efni fyrir þetta skref:

Geymslubox í matvælaflokkiGeymslubox í matvælaflokki1 stykki

Nauðsynleg verkfæri:

HleðsluborHleðslubor
GatasagarsettGatasagarsett
10

The build in 3D

FreeCAD model of this build, not of the patent: the straight-sided churn cut away to show the two perforated domes back to back on the staff, and a lever.
HönnunarskráBLENDCC0 - Free
11

Dash and make butter

Let the heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour in 2 litres. Work the staff up and down; time until the butter comes. 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.
Skref 11 - Image 1

Efni fyrir þetta skref:

RjómiRjómi2000 ml
Gróft sjávarsaltGróft sjávarsalt1 stykki
VatnVatn1 stykki

Nauðsynleg verkfæri:

Hitamælir með nema sem situr íHitamælir með nema sem situr í
SkeiðklukkaSkeiðklukka
Stafræn eldhúsvogStafræn eldhúsvog
Stór hrærskál úr ryðfríu stáliStór hrærskál úr ryðfríu stáli
12

A dasher that sticks or splashes

Double-concave disk dasher troubleshooting.

Flow

Loading...
13

History and honest limits

**Joseph Marsh** of Petersburg, Menard County, Illinois, received US 7,527, dated 30 July 1850. He wrote that it creates "a suction of atmosphere through the milk ... that excels any improvement in churns of ancient or modern invention"; that is his claim. His churn was straight inside "instead of cone-shaped." He claimed the double-concave perforated discoid churn-dasher. **Honest limits.** Printed domes stand in for his tin. FDM prints hold food in their layer lines, so wash well and replace when worn. Your times and weights are the result.

Efni

7

Nauðsynleg verkfæri

9

Hönnunarskrár

4

Þessi teikning býr til

CC0 opinbert ríki

Þessi teikning er gefin út undir CC0. Þér er frjálst að afrita, breyta, dreifa og nota þetta verk í hvaða tilgangi sem er, án þess að biðja um leyfi.

Studdu smiðinn með því að kaupa vörur í gegnum teikningu hans þar sem hann fær þóknun smiða sem seljendur ákvarða, eða búðu til nýja endurskoðun á þessari teikningu og tengdu hana sem tengingu í þinni eigin teikningu til að deila tekjum.

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