Published on 10/16/2026 · by Leandro Caldas, glazier, founder of Routeck and creator of the Arena
Full-length or small mirror? Read the rules first
In the Arena do Vidro final, the rule was short: the mirror had to have a metal frame and stand upright. Any shape, any size, 60 minutes, plus two minutes beforehand to draw. Even so, one of the competitors said afterwards that, mid-challenge, he was convinced the mirror had to be full-length.
That mix-up is one of the best lessons of the season, and it applies to any glass shop: before you copy what the competition is doing, go back to the rules.
What the final's rules actually asked for
When I opened the challenge I said exactly this: it can be any shape, any size, but the mirror must have a metal frame and stand up. They had 60 minutes to build it, and the two minutes of drawing also had to cover measuring and planning the metal cuts.
- A metal frame (square tube).
- The mirror has to stand upright.
- Free shape and free size.
- 60 minutes of challenge time, plus 10 minutes of help from a metalworker, Rui or Peterson, whom each competitor could call whenever they wanted.
Notice that the phrase full-length mirror doesn't appear anywhere in the rules. Anyone who read 'stand upright' and understood 'full-length' added a requirement that didn't exist.
How the competitor tied himself in knots
After the challenge, one of the competitors explained his thinking, and it's very honest. At some point he thought the mirror had to be full-length. Then he remembered the rule was only that the mirror stand up. His first idea was to cut it smaller, make a little square and stand it up on a small tripod. Then he looked over, saw his opponent making a full-length one and thought: if he's doing it, I'll do it too.
He says himself that he was even going to complicate it further with a window cut-out, and that it would really have chipped. Only then did he remember the rules and decide to go rectangular, which was much easier. He also pointed out that if it had been a modular mirror, that would not have worked.
Look at what happened: he almost traded a simple, safe project for a hard one just because the competitor was doing something different. And the rule asked for none of that.
Full-length or small: what changes in the work
Neither mirror is better in itself. What changes is what each one demands from the shop. A full-length mirror is big, heavy and needs a structure that holds it upright. A small mirror on a little tripod is simpler to build and to prop up. In the final, with 60 minutes and tube welding ahead, that difference matters.
| Full-length | Small with support | |
|---|---|---|
| Size | large, more mirror sheet | smaller, less sheet |
| Standing structure | needs a firm frame and a stable base | a tripod or simple support does it |
| Build time | more welding and sanding | less welding |
| Risk of mistakes | higher | lower |
| Final's rule | complies, if it stands | complies, if it stands |
Both comply as long as they stand upright and have a metal frame. The right question isn't which one looks better, it's which one I can deliver well in the time I have.
The sentence that sums it up
Before the scores came in, one of the competitors said he believed he had met the goal: the mirror has to stand upright in a frame. Pretty or ugly, he had delivered what was essentially asked. It's a practical reading. First you meet what was asked, then you polish with whatever time is left.
What this teaches anyone dealing with customers
The same trap happens at the glass shop counter. The customer asks for a framed mirror for the bedroom and you already picture a full-length one because it's the last one you built. Or you see the competition quote a complicated project and think you have to match it to win the job.
- Write down the customer's request with the measurements and what they want, before you start.
- Ask about whatever isn't clear instead of assuming.
- Separate what the customer required from what you added on your own.
- Don't copy a competitor's project without having read your own order.
- Did the final's mirror have to be full-length?
- No. The rule asked for a metal frame and for the mirror to stand upright, with free shape and size. One of the competitors later confirmed it didn't have to be full-length.
- How much time did the competitors have in the final?
- 60 minutes to build the mirror, after 2 minutes to draw and plan the metal cuts. Each could also call Rui or Peterson for 10 minutes of metalwork help.
- Why did the competitor almost change his project?
- Because he saw his opponent making a full-length mirror and thought about doing the same. Then he remembered the rule and went back to the rectangle, which was a lot easier.
Want to see this scene in the episode, with the challenge explained and the competitor's account? Episode 4 is complete here on the site and in the video at the top. And if you want to take part in the next season, applications are open.
Full episode 4: the final · Flat bar vs square tube mirror frame · The season 1 final · How to cut a mirror into shapes