We don't work to fixed opening hours, so here's the more useful answer: we check support every working day, and we aim to reply to most issues within 24 to 48 business hours.
You can write to us any time at [email protected]. Anything that arrives over a weekend or a holiday gets picked up on the next working day.
If your issue is urgent, like a defective part or something missing from your kit, include your order number and a few photos in your first message. That usually lets us sort it out in one reply instead of three.
If you haven't heard from us after two working days, do chase us. It means something has gone astray, and we'd rather you nudged us than waited.