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Blog posts : "design for manufacturing"

Sheet Metal Gauge Chart

In Sheet Metal manufacturing industry, the thickness of sheet metal sheet is commonly specified by a traditional, non-linear measure known as Gauges. Gauges are defined as per standard rolling mill available. Larger the value of gauge number smaller will be the sheet thickness. 

Sheet Metal Thickness Gauge Chart

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Plastic Part Design Guidelines - SMLease Design

Injection molding is a process in which solid thermoplastic resin pellets are melted, injected into a mold, and then cooled back to a solid state in a new form.

During both the injection and cooling stages of the manufacturing process, there are several factors that may affect the quality of the final product and the repeatability of the manufacturing process. Although it is not possible to follow all recommendations, but following points need to be considered for good quality design and to avoid plastic defects.

You can Contact Us if you have any questions related to Injection moulding part design and need any support for Design and development of plastic part


Wall Section Considerations


Wall Thickness

Components cost will reduced if part have a…

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Sheet Metal Design Guidelines - SMLease Design

To develop better quality parts at reduced cost, some of the common sheet metal design guidelines like: minimum distance between holes, cutouts, slots, distance between holes, cutouts, slots to part edge and bends, multiple bends in same direction, minimum bend radius need to be followed.

You can use this guide to make your sheet metal parts manufacturable. You can Contact Us for Sheet Metal Design & Manufacturing Support.


Minimum inside radius for Sheet Metal Bend:

Minimum bend radii requirements depends on applications and material.When the radius is less than recommended, this can cause material flow problems in soft material and fracturing in hard material which can result in Localized necking or fracture.

It is most economical to use a single bend radiu…

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K- factor / sheet-metal flat pattern calculations - SMLease Design

K-Factor is a very useful term in sheet metal part design and manufacturing. K Factor is used by manufacturer for the calculation of flat pattern of sheet metal parts. Designers use k-factor to determine manufacturability of their designed parts.

You can Contact Us for Sheet Metal Design & Manufacturing Support.


Bending is a manufacturing process by which metal can be deformed plastically to change its shape. Material is stressed beyond its yield strength but below ultimate tensile strength to achieve desired shape. This results in the change of surface area.

After bending there is some increase in the total length e.g. (Length + Height) is not equal to Flat Length.

Flat Length = Length + Height - Bend Deduction



Bend Deduction/Allowance


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Sheet Metal Cutting Operations - SMLease Design

Sheet metal Cutting Operation involves the separation of the metal of the sheet in certain areas. This separation is caused by shearing forces acting on the metal through the edges of the punch and die.

You can Contact Us for Sheet Metal Design & Manufacturing Support.

Sheet Metal Cutting Operations:

Shearing Operation

Cutting process that produces straight line cuts to separate a piece of sheet metal. Shearing is used to cut a sheet parallel or at any angle to an existing edge which is held square. Shearing is primarily used to cut sheet stocks into smaller sizes in preparation for other processes.


Blanking is a cutting process in which a piece of sheet metal is removed from a larger piece of stock by applying a great enough shearing force, the piece re…

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