Vacuum Casting and Urethane Casting by HLH Prototypes

Vacuum casting or cast urethanes is a perfect solution for production quality parts without the cost or lead time required for production tooling. At HLH we can cast parts as large and small, everything from headphones all the way up to 2m long car bumpers. We have a massive range of materials available for your projects.

How It Works (3 Stages)

Master model – CNC machined or 3D printed via SLA or SLS
Silicone tool – liquid silicone is poured around the master model and cured. Once dry the master is cut from the mold to leave the cavity
Castings – the resin is poured into the cavity to create a production like replica

Testimonials

I would like to congratulate you and your company with your service and prototyping quality. The communication with our company was very clear and constructive. The prototypes have a very good quality and the delivery speed are fantastic. With your prototypes we can communicate better and faster with our clients and give them a glance of how the product will look and feel like.Ing. Marc E.J. Van Strydonck Industrial designer

Marc E.J. Van Strydonck Industrial designer

Hi HLH, I received the CNC prototypes last week and have spent the past few days assembling them. I would like to thank you and HLH for the work you have done CNC machining these parts and for delivering them to us as quickly as possible. I look forward to working with HLH again as new projects arise in the future.

Jamie Booth

We have always been very impressed by the level of service and quality provided by HLH. HLH gives our company a real competitive advantage in allowing us to provide our clients with quick and cost effective pre-production quality prototypes.

Danny Kane

The prototypes arrived this morning and they look great. Thank you very much for your work on this project and your prompt and thorough communication. We will certainly be in contact again in the future.

Gareth Lauchlan, BDes ID

We have worked with HLH Prototypes on a number of projects over the past year and have always been very satisfied with their services. We have produce with them high quality rapid prototypes for testing before tooling as a means to make sure we have the best design possible.

We will surely be continuing our working relationship with HLH Prototypes in many years to come

Michael Kitchenham

I would like to convey my sincere thanks to your company for all the work you have provided over the past year in helping to create parts for our models and the dedication you brought to our projects.

Not only was the work done to a high standard, and with considerable speed despite the harsh deadlines, but with the kindest and warmest of attitudes. I am delighted to have worked with your company, and would definitely recommend you to others.

Matthew Shaw

Thank you very much again for your teams speed and effectiveness in producing our RP molds. The quality in finish as always was fantastic especially the clear plastic parts.

Our engineers were just commenting on how the quality in the surface and spray finishing are superior to the models that we had received before from other China based RP houses in the past.

Like the previous years, we look forward to displaying your RP models as various international toy trade shows, where they have proven themselves in the past with strength and durability

Chen Kit Li – Chief Designer

HLH Prototypes. What can’t they prototype?

We have had everything from soft rubber to hard plastics, various grades of aluminum to stainless steel parts prototyped via HLH to characterize the performance and gain high level of confidence on design months before actual verification parts and data is available. We have used many of their arsenals of processes from SLA, CNC mill, lathe, forming, wire-cutting, EDM, vacuum cast and my favorite – custom springs. Product development is so much more progressive and easier with HLH as your prototype partner.

Han Hwang, R&D Manager

Advantages of Vacuum Casting and Urethane Casting

Great for low volumes
Self-coloured parts
Low upfront investment
Production like parts
Massive range of materials
Rubber like parts and over molds

Used for

Low volume prototypes, low volume production, rubber parts, market testing, rapid iterations

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Vacuum Casting Tips

Vacuum casting enables you to quickly recreate tens of parts in production like materials allowing you to create multiple reproductions of a part for market or in-house testing. There are a number of things you can do when designing your part to ensure it is a good fit for vacuum casting.

Wall thickness is one. As with injection molding you want consistency as far as possible and don’t want to design overly thick sections which might cause sink.

To learn more talk to our Cast Urethane Parts (vacuum casting) team today.