EDM parts off additive parts

CA Models is using two wire-erosion machines from Sodi-Tech EDM to optimise the process of removing 3D-printed parts from their build platforms.

The company specialises in high-quality, fast-turnaround metal and plastic additive manufacturing. With sectors such as Formula One currently in development for next year’s cars, the new Sodick machines are making a real difference to operational efficiency.

Established in 1983, CA Models has five different additive manufacturing departments, including metal laser sintering. This process allows components to be 3D printed from powdered metal that includes aluminium, titanium and steel. The 35- employee company can provide printing, finishing and optional post-machining, all in-house.

“We had two Sodick wire EDM machines that were still running well but getting on in years,” said founder and Managing Director Clark Campbell. “I felt it was the right time to bring in some new technology for the next decade. The new Sodick machines are even more accurate and faster. At CA Models we are in the ‘quick’ business, where just about every client wants their parts yesterday. That’s why we need an in-house resource when it comes to wire erosion. Every time we have a really complex, accurate part to produce, the clock is ticking.”

Installed in September 2022, the new Sodick ALC600G and

ALC800G wire EDM machines are already busy.

“For example, take a titanium build platform with 14 motorsport parts on the base,” said Mr Campbell. “When the printing process is complete, the entire platform goes into our furnace for heat treatment for 24 hours, after which we wire-off all the components from base plate using our Sodick technology. As the wire cuts so finely we do not lose any dimensional accuracy in the parts. Furthermore, the machines wire so quickly that we get a head start in finishing the components. Although this process is the underlying reason behind our investment, we also get many subcontract CNC machining projects, some of which lend themselves to wire EDM. It’s great to have that flexibility, particularly for complex, intricate parts required by sectors such as Formula One.”

The Sodick ALC800G wire EDM which provides 800 x 600 x 500mm (Z-axis option of 800mm).

“As far as wire EDM is concerned it’s always nice to have a big machine because we sometimes get large or unusual requests,” explains Mr Campbell. “I think we’re the only company in the UK to have the ALC800G model.”

Without the Sodick wire EDMs,

CA Models would have to remove additively manufactured parts from base plates using its large bandsaw, which is far from ideal.

“It’s something we’ve done before, but it always feels a little unsafe and not exactly bestpractice in my opinion,” said Mr Campbell. “Wire EDM is far more practical, efficient and effective. Furthermore, once finished, the support plate looks brand new and ready to use again, which is really helpful.”

Although CA Models serves clients across a host of industries that include aerospace, defence, medical and energy, among the busiest sectors at present is motorsport, particularly Formula One, where teams are designing and manufacturing parts for next year’s cars.

“I think we could be particularly busy this time around as Formula One currently has one dominant team, so the others are very keen to make up ground,” said Mr Campbell. “We received a nice order last week from a team towards the back of the grid, who should really be towards the front. ” 8 camodels.co.uk

A 3D printed model of Emmerdale featured in a trailer for the show’s 50th anniversary climax.

When ITV’s Emmerdale soap opera reached its milestone 50th birthday, the show’s producers marked the occasion with a series of stories that came to a head in a gripping special episode. Weaving the show's past with the present, an all-action climax saw a deadly storm hit the village and, in the run-up, viewers were treated to a powerful trailer, that featured starring cast members recreated as full colour 3D printed models.

ITV contacted Cheshire-based 3D scanning and printing specialist Europac3D to establish the possibility of 3D scanning and colour printing for the project and, as the company’s Operations Manager Danielle Kenny said: “We visited ITV at their offices in Leeds and scanned the cast members using the Artec Leo scanner,” she continues. “We had a full day on site with the team and scheduled the actors to attend specific timeslots, during which they were scanned in costume, holding poses to match the requirements of the animated trailer.

“Once the scanning was complete, we processed the files back at Europac3D to prepare them for print, with every model edited to enable two different sized versions of each to be produced.”

Europac3D called upon UK and Ireland Mimaki distributor, Hybrid Services to create the