Specializing in high tolerance prototype machining services, including precision machining of Teflon material.

Precision manufacturing demands exacting standards, especially when producing prototypes from challenging materials. This guide explores high tolerance machining for prototype machining services, with a special focus on machining Teflon (PTFE) - a material renowned for its unique properties but notorious for machining difficulties.

What tolerances do you guarantee?

We guarantee that all CNC-machined parts adhere to ISO 2768 standards. For metal-machined parts, we adhere to ISO 2768-m (medium) or ISO 2768-f (fine). For plastic-machined parts, we adhere to ISO 2768-m (medium).

 

Geometric tolerances can be as low as ±0.0004 in (0.010 mm), but must be clearly indicated on the technical drawing. We can achieve tighter tolerances on shafts, up to H7 fits, and offer manual quotes, sometimes meeting even more stringent requirements.

 

What are the minimum and maximum sizes you can machine?

At Hongsinn, we offer CNC milling (including 3-axis, 3+2-axis, and 5-axis) as well as turning services.

 

Milled Parts:

 

For 3/3+2-axis CNC milling, the maximum machining size is 2000 x 1500 x 200 mm (78.7 x 59.0 x 7.8 inches).
For 5-axis milling, the maximum part size is 650 x 650 x 300 mm (25.5 x 25.5 x 11.8 inches).

CNC Turning:

 

The maximum diameter is 431 mm (17 inches) and the length is 990 mm (39 inches).
The recommended minimum part size is approximately 0.39 x 0.39 x 0.39 inches (10 x 10 x 10 mm), with a minimum feature size of 0.5 mm.

Conclusion

Combining high tolerance machining expertise with specialized prototype machining services enables manufacturers to overcome the challenges of machining Teflon and other advanced materials. Key takeaways:

✔ Teflon requires unique machining strategies to maintain dimensional stability
✔ Prototype services must balance speed with precision
✔ Sub-0.001"tolerances are achievable with proper techniques
✔ Industry-specific solutions exist for medical, aerospace, and semiconductor applications

Shenzhen Hongsinn Precision Co., Ltd is a professional custom precision machining parts manufacturer. Hongsinn was established in 2010 and located in Shenzhen a famous manufacturing city in China .

We own multiple CNC 4-axis and 5-axis machining centers, turn-milling combination NC machines, gantry grinding and milling machines, wire cutting and other equipments. inspecting instruments include Zeiss CMM Measuring Machine,and Mitutoyo CMM Measuring Machine , Keyence automatic image detector, USA made analyzer, surface roughness meter, etc.With a high passionate Manufacturing and quality controling team , we can process all kinds of parts by various materials ( mild steel, aluminum alloy, stainless steel, all plastic ,special die steel, brass, bronze, copper, titamiun alloy, magnesium alloys,composite material, Hitachi Daido special steel, resin materials, etc.) efficiently.Factory is in famous machining industrial town where has complete heat treatment and coating supply chain and enable us to handle all kinds of hardness and hardness depth requirements prodcuts , also various coating like all color anodize, chrome plating,electroless nickel plating,zinc plating,black oxide,PVC,TiN ,nitride etc.

Hongsinn is certified ISO9001:2015 license. We prioritize quality in every aspect of our production process. We adhere to strict quality control procrdure and implement advanced quality management policy to ensure that every part meets customer requirements.

Shortest lead time to 3 days to catch customer project schedule requirements and let customer keep competitive in their market.We are able to provide customers with excellent service and maintain open lines of communication with our clients throughout the manufacturing process.

MOQ 1 pc and flexible capacity, no order too small or too big for us.

Hongsinn plastic parts prototypes quality is 100% according to ISO9001 Standard. We seriously take care of the quality control from IQC to OQC, throughout each step of the production.

Hongsinn dedicated to strict quality control and thoughtful customer service. We strive to exceed our customers' expectation in all aspects of product manufacturing process, and recognize our great responsibilities to our customers.

All our materials are purchased from certified suppliers. All materials will be subject to warehousing quality inspection upon arrival. After the pre-production sample is confirmed, the sample will be sealed immediately. prenatal sampling inspection, intrapartum sampling inspection, and postpartum sampling inspection, and the inspection results will be recorded in time. All files are traceable.

Rongna:  IGES (.igs) /STEP (.stp) /Parasolid (.x_t) / .stl files.

Rongna: Sure. We never divulge customers' information to anyone else.

Rongna : 1 pcs , we provide prototype to mass production service