digplanet beta 1: Athena
Share digplanet:

Agriculture

Applied sciences

Arts

Belief

Business

Chronology

Culture

Education

Environment

Geography

Health

History

Humanities

Language

Law

Life

Mathematics

Nature

People

Politics

Science

Society

Technology

A cylinder with longitudinal draft
Profile view of a drafted cylinder with the draft dimension

In engineering, draft is the amount of taper for molded or cast parts perpendicular to the parting line. It can be measured in degrees or mm/mm (in/in).

Consider the fabrication of a hollow plastic box, without lid. Once the plastic has hardened around the mold, the mold must be removed. As the plastic hardens, it may contract slightly. By tapering the sides of the mold by an appropriate "draft angle", the mold will be easier to remove.

If the mold is to be removed from the top, the box should taper in towards the bottom, such that measuring the bottom internal dimension will yield a smaller length and width than measuring the top from which the mold is extracted.

By specifying the opening length and width, a draft angle, and a depth, it is not necessary to specify the dimensions for the internal surface, as these may be calculated from the above.

The manufacture of a part that incorporates zero or negative angles may require a mold that can be separated into two or more parts, in order to release the casting.

External links[edit]


Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Draft_(engineering) — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
580368 videos foundNext > 

Engineering Technologies: Engineering Graphics and Design/Drafting

Learn about the Engineering Graphics and Design/Drafting program in the Engineering Technologies Division at OSU Institute of Technology in Okmulgee, OK ...

What is Engineering Drafting and Design?

www.nti.edu or (952) 944-0080 Is an Engineering Design career good for you? Check out this video and ask us any questions you have. We welcome you to ...

Submitting a Draft Engineering Competency Claim as a PDP Participant

Home-made red wine on draft! Engineering is fun.

Introduction To Engineering Drawing

We make it Ez for you to understand What is Engineering Drawing ? What are the different types of Drawing Instruments and its uses ? Lines and Types of Lines ...

engineering draft

Final Draft of Engineering Project Technical Video

SIAST - Engineering Design and Drafting Technology

A profile of SIAST's Engineering Design and Drafting Technology program at Palliser Campus in Moose Jaw, SK.

Tools for Drafting by hand

Introduction of the tools used for drafting for film and television set design.

Autocad Tutorial:Basic 2D drafting in Autocad in easy steps

Basic Civil Drafting in Autocad Learn how to draft Basic home layout,Hatching,text,Offset and may more... Do add comments if you liked it and Subscribe us for ...

580368 videos foundNext > 

92 news items

 
Emery County Progress
Tue, 12 Apr 2016 08:45:00 -0700

Evenstad explained the Engineering Design Review. The 80 percent draft engineering design for the rehabilitation was submitted to the NRCS National Design, Construction & Soil Mechanics Center on November 10, 2015 for the required detailed review.

Asbury Park Press

Asbury Park Press
Sun, 04 Jan 2015 21:03:35 -0800

23, to the U.S. District Court of New Jersey says FEMA has directed its contracted engineering firms to provide FEMA with any draft engineering reports connected to the approximately 1,500 pending civil cases in the region within 21 days. Those drafts ...

Gisborne Herald

Gisborne Herald
Tue, 26 Jan 2016 17:29:34 -0800

The dam's owners, Eastland Group, yesterday met Hawke's Bay Regional Council representatives to discuss a draft engineering report about issues at the Waihi hydro electricity scheme at Lake Ruapapa on the Waihi River, 26km north-west of Wairoa.

The Vandalia Leader

The Vandalia Leader
Tue, 19 Jan 2016 15:48:45 -0800

... and has determined that the project may be eligible for funding through the program pending submitted and review of proper procurement documentation of an engineering firm and approval of the draft engineering agrement within the approved timeframe.
 
Mountain View Voice
Wed, 24 Feb 2016 09:07:56 -0800

22.2 mW/m^2: Laptop WiFi at 0.5 m (~2 feet): UK Health Protection Agency quango Web Link 12 mW/m^2: Clearwire WiMAX antenna array in Irvine, CA: Draft engineering report (paid for by Clearwire, presumably required as part of an impact report): Web ...

Minneapolis Star Tribune

Minneapolis Star Tribune
Thu, 19 Nov 2015 13:22:30 -0800

City planners noted the new hotel's parking capacity may be impacted by alignment of the Gold Line, which has just completed its draft engineering documents as its backers seek federal funding. Its route would include a potential station on 4th St. N ...

TCPalm

TCPalm
Thu, 08 Oct 2015 16:29:49 -0700

“The city will need to review these wayside horns with final 90 percent design plans,” Watanabe said about draft engineering plans provided by All Aboard Florida to local governments. Those plans would show tentative locations of the horns and other ...
 
MyPalmBeachPost (subscription)
Thu, 16 Jul 2015 14:00:55 -0700

A draft engineering report issued a month before his drowning found corrosion, cracked concrete, exposed rebar and problems with gratings and guardrails throughout the plant and several million dollars of needed equipment maintenance. In a February ...
Loading

Oops, we seem to be having trouble contacting Twitter

Support Wikipedia

A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia. Please add your support for Wikipedia!

Searchlight Group

Digplanet also receives support from Searchlight Group. Visit Searchlight