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GÜZELLİK & SAĞLIK
ZANAAT
KÜLTÜR & TARİH
EĞLENCE
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YİYECEK & İÇECEK
TERS MÜHENDİSLİK
BİLİMLER
SPOR
TEKNOLOJİ
GİYİLEBİLİR ÜRÜNLER

Rotary-Dasher Box Churn: Float Boards on Crossed Arms in a Curved Box
An up-and-down dash churn is slow, tiring work.
Rufus Porter of Billerica, Massachusetts, received US 735, dated 10 May 1838, for a churn: a box eighteen inches long with a bottom curved from end to end; a wooden shaft running between a hollow cone and a pointed centre screw; two parallel pairs of rods through the shaft at right angles, carrying float boards parallel with the shaft — "what is termed the rotary dasher" — turned by a crank whose twisted tenon is pressed into the shaft and comes out when the occasion requires.
This rung compares his churn's sweep with a tabletop one, then prints the dasher, builds the box, and makes butter.
Orta
About 5 hours, plus printing
Talimatlar
1
1
Butter yield and sweep
Butter yield and sweep
Jupyter defteri yükleniyor…
2
2
A board pushed through liquid before it
A board pushed through liquid before it
The embedded blueprint drives a boat with a flat paddle. Porter's float boards push through cream the same way, turning on a shaft.
3
3
Read US 735
Read US 735
"Four round bars or rods, sixteen inches long and one inch in diameter, pass through the shaft; two of these rods are parallel, and about five inches apart, each being one inch from one end of the shaft. The other two are parallel to each other, but at right angles with the first pair, and three inches apart; the four bars thus constituting eight arms."
4
4
Print the dasher
Print the dasher
Print the rotary dasher: core, two parallel pairs of arms at right angles, and four float boards (/uploads/blueprints/rotary-dasher-box-churn-dasher.stl). Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use.
Bu adım için malzemeler:
PETG filament1 adetGerekli aletler:
FDM 3B yazıcı5
5
Use a box with a curved bottom
Use a box with a curved bottom
Take a food-safe storage box about 150 × 100 mm and 150 mm deep. Drill both ends on the dasher's axis, 85 mm up. Bed a plywood strip curved from end to end in its floor with silicone, as his curved bottom.
Bu adım için malzemeler:
HDPE saklama kabı1 adet
Kontrplak levha1 adetGerekli aletler:
Kıl Testere
Kablosuz Matkap
Matkap Ucu Takımı6
6
Cone, centre screw and crank
Cone, centre screw and crank
File an M5 screw to a point and run it through one end as the centre screw into the dasher's end hole. Through the other end pass a 5 mm rod into the dasher's seat as the hollow-cone bearing, bent outside into a crank.
Bu adım için malzemeler:
Makine vidaları1 adet
Altıgen Somun1 adet
Yumuşak Çelik Çubuk1 adetGerekli aletler:
Eğeler (El Eğesi)
Tezgah Mengenesi
Kurbağacık anahtar7
7
The patent drawing
The patent drawing
US 735 drawing sheet, public domain (expired patent).

8
8
Make butter
Make butter
Let 500 ml of heavy cream stand until it reaches about 15 °C, checked with the thermometer. Pour it into the box, close the lid, and crank steadily; time until the butter comes. Pour off the buttermilk, add cold water, churn a few turns and pour off again until it runs clear; work in a pinch of salt and weigh the butter.

Bu adım için malzemeler:
Yağlı krema500 ml
İri Deniz Tuzu1 adet
Su1 adetGerekli aletler:
Takılı kalan problu termometre
Kronometre
Dijital Mutfak Terazisi
Büyük paslanmaz çelik karıştırma kâsesi9
9
A dasher that sticks, a box that leaks
A dasher that sticks, a box that leaks
Rotary-dasher box churn troubleshooting.
Flow
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10
10
History and honest limits
History and honest limits
**Rufus Porter** of Billerica, Massachusetts, received US 735, dated 10 May 1838. His box is eighteen inches long, ten wide and eighteen deep, of boards three-quarters of an inch thick; the bottom, three-eighths thick, is curved so its centre is three inches lower than its ends; a lid with ventilation apertures fits a rabbet; the float boards are eight inches long and three wide. He gave the dimensions of every part.
**Honest limits.** A storage box and a printed dasher at tabletop scale stand in for his. FDM prints hold food in their layer lines, so wash well and replace when worn. Your times and weights are the result.
Malzemeler
10- 1 adetYer Tutucu
- 1 adetYer Tutucu
- 1 adetYer Tutucu
- 1 adetYer Tutucu
- 1 adetYer Tutucu
- 1 adetYer Tutucu
- 1 adetYer Tutucu
- 500 mlYer Tutucu
- 1 adetYer Tutucu
- 1 adetYer Tutucu
Gerekli Aletler
11- Yer Tutucu
- Yer Tutucu
- 1 vendor sell this, none ship to you yetYer Tutucu
- Yer Tutucu
- Yer Tutucu
- Yer Tutucu
- Yer Tutucu
- Yer Tutucu
- Yer Tutucu
- Yer Tutucu
- Yer Tutucu
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