Turn a design into a physical part quickly.
Sands Works provides in-house 3D printing, functional prototyping, and light machining and fabrication to support product development, replacement parts, fixtures, and low-volume component needs.
Parts can be produced directly from customer-supplied CAD files or designed as part of an engineering project. Keeping prototype manufacturing in-house allows designs to be quickly evaluated, modified, and tested before committing to production tooling or outside manufacturing.
In-house FDM printing is available for functional prototypes, brackets, housings, fixtures, replacement parts, and small production quantities.
Material selection is typically based on the operating environment and functional requirements of the part. Call for
Sands Works can design, print, assemble, and evaluate prototypes for fit, function, installation, and manufacturability. Designs can then be revised based on physical testing before moving toward production.
In-house capabilities also include light machining, welding, forming, drilling, tapping, cutting, trimming, prototype assembly, part modification, and small fabrication work.
Specialized manufacturing processes or larger production quantities can be coordinated with outside manufacturing partners when required.
Already have a STEP/STP or STL file? Send it for review.
Have an idea or existing part but no CAD model? Sands Works can help develop it.
General Prototyping: PLA, PETG
Outdoor / UV-Resistant Parts: ASA
Engineering Plastics: ABS, Nylon (PA)
Flexible Components: TPU
Low Carbon Steel
Aluminum
Galvanized steel
304/316 Stainless steel
Expanded metal
Low Carbon Steel
Alloy Steels (AISI 4140, 1045, etc)
Aluminum
304/316 Stainless steel
Note: metals are not typically stocked, but can be typically obtained within 1-3 days.
Sloped Handrail Base Plates Project Focus: Outdoor Durability · Custom-Fit · Rapid Turnaround · Low-Volume Production
A customer needed custom base plates for handrail posts installed on a sloped outdoor concrete retaining wall and provided several key dimensions.
Sands Works created the CAD model and manufacturing drawing, confirmed the critical dimensions with the customer, and produced the finished parts in-house.
The parts were printed in ASA for UV and weather resistance and were ready for the customer the next business day.
Material: ASA
Process: FDM 3D Printing
Turnaround: Next Business Day
2-Year Limited Workmanship Warranty covering manufacturing defects such as layer separation, warping, or cracking under normal intended use.
Compact Automated Indentation Test Frame Project Focus: Precision Motion · Mechanism Design · Fixed Build Volumn Constraint
Designed and built from the ground up to perform automated material testing inside a restrictive 6.5 × 7.5 × 5.5 in. robotic scanner work envelope.
The system incorporated a custom recirculating-ball lead screw and nut using 1/8 in. steel bearings, involute gearing, twin linear guides, stepper actuation, and load-cell force measurement. I modeled every mechanical component, machined the lead screw and other parts, drilled and tapped components, 3D printed the prototype structure, and completed the assembly and fit-up.
I also selected the electronic components, designed and wired the embedded control system, and wrote the microcontroller firmware for the motor-control and load-cell systems. The separate PC-side Python interface was developed by other team members.
The custom motion system achieved virtually zero backlash and approximately 0.78 µm indexable linear displacement.
Result: A working Phase 1 prototype validating precision motion, instrumentation, controls, packaging, and mechanical operation.
Wall-Climbing Robot Project Focus: Mechanism Design · Custom Drivetrain · Machining · Iterative Optimization
Designed and built from the ground up to climb vertical and horizontal surfaces while maximizing travel speed without stalling the drive motor.
The custom drivetrain used an externally toothed gear with dual cam followers riding inside steel bearings to drive a reciprocating dual-pitch lead screw. Different screw pitches were designed for the unequal moving masses of the robot body and extending head, helping balance motor torque while increasing travel speed during the lower-load portion of the cycle.
I designed and calculated the complete mechanism, modeled every component, machined the lead screw and other parts, and assembled and tested the entire system. The lead screw was polished to approximately 2000 grit to reduce friction, while custom thrust bearings used 3D-printed races with 1/8 in. steel ball bearings.
The original design (See 2nd photo exploded view) was built with massive room for adjustment and tuning to test optimal settings and design parameters. It was robust and reliable but relatively heavy. A second-generation robot was then designed using the newly discovered knowledge and optimized around lower weight and reduced drivetrain friction, producing a substantially faster machine.
Result: The final robot successfully climbed both vertically and horizontally and earned 1st Place in Design and 1st Place in Overall Speed.