Journal

Two 5-axis machined aluminum impellers

CNC Design Features That Add Cost

Most of the price of a machined prototype is machine time. Eight design features that add machining time without improving the part, and how to change them on the drawing.

CNC Design Features That Add Cost

Most of the price of a machined prototype is machine time. Eight design features that add machining time without improving the part, and how to change them on the drawing.

CNC router cutting a tooling board pattern

Carbon Fiber Prototypes Without a Production Mold

Open molds for the first few parts, composite tools for short runs, matched metal molds when both faces matter, and the tooling details that affect lead time.

Carbon Fiber Prototypes Without a Production Mold

Open molds for the first few parts, composite tools for short runs, matched metal molds when both faces matter, and the tooling details that affect lead time.

Injection mold cavity and core halves

Aluminum vs Steel Injection Molds

How production volume decides between aluminum and steel molds: SPI mold classes, when aluminum is enough, when P20 or H13 is needed, and two lower-cost alternatives.

Aluminum vs Steel Injection Molds

How production volume decides between aluminum and steel molds: SPI mold classes, when aluminum is enough, when P20 or H13 is needed, and two lower-cost alternatives.

Rows of CNC-machined aluminum parts laid out on a shop table

What to Include in a Quote Request

The files and details that let a shop quote your part quickly and accurately: 3D CAD, a drawing with tolerances, material and finish, quantities and timing.

What to Include in a Quote Request

The files and details that let a shop quote your part quickly and accurately: 3D CAD, a drawing with tolerances, material and finish, quantities and timing.

SSD Enclosure 1 in 2x2 twill weave and spread tow weave carbon fiber

2x2 Twill vs Spread Tow Carbon Fiber

Twill has the diagonal pattern most associated with carbon fiber; spread tow has a larger checkerboard. How each weave is made, how they differ and how to choose.

2x2 Twill vs Spread Tow Carbon Fiber

Twill has the diagonal pattern most associated with carbon fiber; spread tow has a larger checkerboard. How each weave is made, how they differ and how to choose.

SSD Enclosure 1 compatibility: M.2 NVMe SSDs in 2230, 2242, 2260 and 2280 sizes with M key or M and B key; SATA drives not supported

Which M.2 SSD Fits a Thunderbolt NVMe Enclosure?

What the M.2 size numbers mean, why the drive has to be NVMe and not SATA, and a checklist for choosing an SSD for a Thunderbolt enclosure.

Which M.2 SSD Fits a Thunderbolt NVMe Enclosure?

What the M.2 size numbers mean, why the drive has to be NVMe and not SATA, and a checklist for choosing an SSD for a Thunderbolt enclosure.