Hello! We are a digital manufacturing service provider with over 25 years of experience in small-to-medium batch production. We offer one-stop manufacturing services including： *** Rapid prototype *** 3D printing *** Mold making *** CNC machining *** Injection molding *** Finished product assembly We have over 100 professional engineers and hundreds of high-end precision machining machines, including a Hammer 5-axis CNC machine. We provide one-stop manufacturing services to over 800 companies worldwide, including Fortune 500 companies such as Siemens, Land Rover, Bentley, Flex, and NVIDIA. Having reviewed your requirements, I believe our expertise can meet your needs. You can send your 3D drawings in STP or X-T format to my email address. We hope to have the opportunity to provide you with a quote. With best regards Nick Luo Head of Marketing

From Visual Accuracy To Real Use

Can a 3D printed anatomical model look realistic and still pass handling requirements? This project is a medical industry heart model made through SLA 3D printing with ABS material. The visible geometry includes open cavities, thin edges, internal channels, and layered anatomical details. For this kind of part, appearance is only one side of the requirement. Surface quality, dimensional fit, and handling strength all need to be controlled before delivery.

Color options prepared for client confirmation

Controlled SLA Printing And Finishing Route

For medical-related models, small surface defects, weak edges, or unstable dimensions can affect both visual communication and user confidence. The main difficulty is not only printing the shape. It is keeping the thin walls, openings, painted areas, and internal details clean after multiple post-processing steps.

Mastars used SLA 3D printing to build the ABS heart model first. After printing, the parts went through 2 rounds of hand sanding and 2 coating steps: primer and final paint. Inspection covered 3 key items: surface quality, critical dimensions, and pull testing. Under the customer’s requirement, the model needed to withstand 10 kg. Parts that passed were marked as qualified. Parts that failed were rejected. Qualified parts were then packed and shipped.

Gloved inspection before packing and delivery

Clear Checks Before Parts Leave

Client core value: The client receives a medical model with controlled appearance, dimensions, and strength before shipment.

In detail, the value comes from these areas:

✅ SLA ABS route completes complex anatomy with 0 tooling investment.

✅ 2 sanding rounds and 2 coatings improve surface consistency.

✅ 3 inspections cover surface, dimensions, and pull strength before shipment.

✅ 10 kg pull requirement gives clear pass-or-fail judgment evidence.

✅ Only qualified parts enter protective packing and final delivery.

Batch parts prepared for final quality control

Bring The Same Control Earlier

This kind of requirement is not limited to medical models. Any part with complex geometry, visible surfaces, and functional handling requirements needs a process route that connects manufacturing and inspection early. A good-looking prototype is not enough if it cannot pass real handling checks.

Similar needs also appear in these fields:

• Medical devices — anatomical training model

• Industrial design — appearance validation sample

• Consumer products — painted housing prototype

• Robotics — complex protective cover

• Education equipment — functional demo model

SLA printed heart model after surface finishing

Do you have a part that needs visual realism, dimensional control, and strength verification together? Talk to Mastars before your next prototype moves into delivery.

Mastars, the most trusted one-stop manufacturing services provider for low-volume production worldwide!