As one of the UK’s leading prototyping specialists, we meet the needs of product developers and companies needing high-quality one-offs and small batches. To fulfil customers’ diverse additive prototyping requirements, we offer a range of 3D printing technologies.
3D printing is a generic term for a variety of additive prototyping (AP) and additive manufacturing (AM) technologies, also known as rapid prototyping (RP) and rapid manufacturing (RM). These are additive processes in which parts are built in thin layers. Here at Prototype Projects, we 3D print plastic parts from powder or photopolymer resins (light-curing liquids). On request, we can also outsource additively manufactured prototype metal parts.
The question of which 3D printing technology to use depends on the application, so we offer multiple technologies:
To complement these, we also have CNC machining, laser cutting and vacuum casting. If you are unsure which is the optimum technology for your project, talk to us to get an unbiased opinion.
Our quoted tolerance on 3D printed parts is ±0.5mm though this is influenced by part geometry, 3D printing technology, material and build orientation
However, when we use PµSL for 3D printing, we quote a much tighter general tolerance of ±25µm.
If you need specific tolerances on individual part features, talk to us and we will do whatever we can to accommodate your requirements.
Most 3D printing technologies cannot form features smaller than 0.6mm, though there is some variation between technologies. If your part has a feature smaller than 1mm, talk to us before requesting a quote, as we will need to interrogate the part file to determine the best build orientation.
For small parts with ultra-fine detail, thin walls and sharp edges, PµSL has a resolution down to 10µm and layer thickness down to 5µm.
We have five different 3D printing technologies and each machine manufacturer recommends a range of materials. From these, we have selected a set of materials to meet the vast majority of our customers’ needs. Between them, our 3D printers can produce parts that mimic those injection moulded from materials as stiff and strong as glass-filled nylon, though to soft elastomers. More information is provided on our page about materials for 3D printing.
Customers have a choice of finishes for 3D printed parts, including SLS colouring, painting, lacquering and blackout/RFI/EMC coatings. The choice depends on the 3D printing technology, material, and whether the part is for a visual model or a functional prototype. Details are provided on our 3D printing finishing options page.
All 3D printed prototype parts are inspected visually after cleaning and, again, after any secondary finishing operations. In addition, key dimensions are checked with callipers. If requested, we inspect parts using our co-ordinate measuring machine and produce detailed inspection reports. Read more about our inspection facilities.
We offer a choice of production speeds to suit customers’ technical requirements, timescales and budgets. If you need parts quickly, we ship them the next working day with our Overnight service.
Quality is the same, whichever production speed you choose; machine settings and build orientation are always selected to optimise the part’s requirement, not build speed.
Find out more about our Production Speeds.
When you send us an additive prototyping enquiry, we check the STEP or STL file, raise any queries, then prepare a quote. We do not need 2D drawings unless there are critical dimensions or other features to highlight. If you accept the quote, we prepare the build file and schedule the job on one of our 3D printers.
After printing, the parts are visually inspected, finished as necessary, then inspected again prior to packing and dispatch. We use our own vans for free local delivery or a courier for customers further afield.
Prototyping often requires one-off parts but sometimes multiple parts are necessary. Additive prototyping is quick and cost-effective for producing small batches with good part-to-part repeatability.
3D printing can either be used instead of or as a precursor to aluminium injection mould tooling, with much shorter lead times, lower costs and reduced project risk.
A further option is to make a master pattern using SLA, then replicate this multiple times by vacuum casting in polyurethane resin.
Do you need 3D printing for additive prototyping? Talk to us about your project on 01763 249760 or complete the enquiry form below to request a quote.
Our model making and AP/AM workshop team deliver high-quality 3D printed and vacuum cast prototype parts. We offer next day dispatch on SLS, SLA, Polyjet and DLP. Request a quote for your next prototype project.
Tim Rowell
Quality & Operations Manager
Gemma Zouher-Lewis
RP Team Leader
Jordan Cooney
RP Technician
Nick Crown
RP Technician
Chris Johnson
RP Technician
Hemal Maisuria
RP Technician
Leon Willis
Workshop Assistant/Delivery Driver
Adam Sharkey
3D Print Team Leader
Alex Barnett
Senior RP Technician
Jan Mlynarcik
3D Print CAD Technician
Luke Webb
RP 3D Printing CAD Technician
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