The one-day Duplo Festival on 28 June follows last year's inaugural event, which saw 342 festival goers converge on the supplier's headquarters in Addlestone, Surrey.
Last year's bash led to over £250,000 of new business and was headlined by the DuSense DDC-810 Sensory Coater, which was given its official UK launch.
Project marketing manager Joanne Punter said: “Last year was a two-day event and this year it's just one, but we still expect to welcome 200-plus people including lots of French visitors from our subsidiary there.
“Partners and guest speakers are still to be decided, but last year we had Vivid and Renz in a pop-up tent giving samples and demonstrations.”
This year's kit line-up is still being finalised and may include a new product launch, but this has not been confirmed, she said.
As well as local bands and comedy acts performing on the main stage, the summer celebration will also host a giant football screen for some World Cup viewing as well as festival-style food and drink concessions.
One area will be dedicated to Duplo’s systems, said UK managing director Andy Benson of the event that will run to 10pm.
“During my early days of joining Duplo at the back end of last summer, all our customers spoke to me about was the first event,” he said.
“A year on, we plan to evolve the fun and celebrate print, listening to music and sharing in the success or pain of England’s football team at the World Cup.”
He added: “Doing an open house would have been more straightforward, but we wanted to bring people together to celebrate print.
“Duplo Summer Festival 2018 attendees will be encouraged to join in the fun, put on their best festival attire, and enjoy themselves.”
Numbers will be restricted due to space. For further information and to register, visit www.duplofest.co.uk.