The triangle
Two rung sides joined at the top by a wooden disc that turns. Open it wider to sit low and stable, or close it to gain height. And it folds flat to put away.
Pachuca de Soto, Hidalgo · Workshop-made
Montessori furniture that connects together
We sell two kits: two Pikler triangles with their ramp, and the balance arch with its own. Each kit sets up several ways on its own, and with both you get six more setups that neither manages alone.
Solid wood & plywoodNon-toxic finishFixed price
The system
Three pieces, one system
The arch
Curve down, it rocks: it is a rocker. Flipped over, the curve sits on top and it becomes a bridge to go over or under.
The reversible ramp
It hooks onto any rung of the triangle, and onto the arch too. One side is smooth and works as a slide; the other has cleats and is climbed like a ladder.
Two kits. Fifteen setups.
We sell kits, not loose pieces. Each one sets up several ways on its own; with both you unlock six more setups that neither manages alone.
6setups
Kit of 2 Pikler triangles
Includes 2 triangles and 1 ramp.
- One triangle, open
- One triangle, closed
- With ramp, ladder side
- With ramp, slide side
- Little house
- Long bridge
3setups
Balance arch kit
Includes 1 balance arch and 1 ramp.
- Rocker
- Bridge
- Bridge with ramp
+6setups
Only with both kits
The ramps cross from one piece to the other.
- In through the arch
- Ramp to the arch
- Table with a climb
- Long course
- Tall format
- Tall with slide
The progression
Grows with your little one
- Stage 1Arch kit
Sits and rocks
The arch, curve down, is the first thing they use: the baby sits inside and rocks, holding on to the rungs. It is balance before walking.
See this setup - Stage 2Triangles kit
Stands up
A triangle opened all the way sits low on a wide base. It is for pulling up to stand, and the first rungs sit at just the right height for a first try at climbing.
See this setup - Stage 3Triangles kit
Climbs up and slides down
In comes the ramp. Cleats up, it is climbed like a ladder; flipped over, the same board is a slide. One accessory, and the piece has a way in and a way out.
See this setup - Stage 4Triangles kit
Makes it a home
The two triangles join at the peak and a little house appears: climb on the outside, play inside. This is where the piece stops being equipment and becomes a hiding place.
See this setup - Stage 5Both kits
Runs a course
Arch, triangles and ramps linked together: up one side, across the bridge and down the other. It is no longer a piece of furniture, it is a course, and it changes every time it is rebuilt.
See the circuits
The catalogue
See the catalogueThe furniture
Kit · 6 setups of its own
Kit of 2 Pikler triangles
Free movement and motor skills, at home and safely.
$3,199.00
Includes 2 triangles and 1 ramp. Shipping not included.
Kit · 3 setups of its own
Balance arch kit
An arch to crawl, climb and rock on, that changes use as your child grows.
$1,999.00
Includes 1 balance arch and 1 ramp. Shipping not included.
Both kits · +6 setups
Set of 2 Pikler triangles and balance arch
Both kits together, to also build the setups that need both.
$4,399.00 You save $799
Includes 2 triangles, 1 arch and 2 ramps. Shipping not included.
Coming soonMontessori house bedLearning tower
The workshop
Made in Pachuca by Armando
ARCA Carpintería is an artisan workshop in Pachuca de Soto, Hidalgo, Mexico. We build Montessori furniture with fixed specs, each piece handcrafted one at a time by master carpenter Armando.
Materials, stated honestly. Solid wood and high-quality plywood, with a water-based sealant. It is not one hundred percent solid wood, and saying so is part of why people trust us.
Fixed price, proven measurements. The measurements are already worked out, and you know the price before you message us.
Why the material matters
Why we don't use MDF
Most children's furniture on the market is made from MDF — wood fibres bonded with resins. Here's why ARCA builds with solid wood and high-quality plywood instead.
MDF
- Wood-fibre board bonded with resins
- Swells and delaminates with moisture
- Fragile edges: one hard knock damages the edge beyond repair
- Short lifespan with daily use
ARCA
- Solid wood and high-quality plywood
- Non-toxic water-based sealant, safe for children from day one
- Stable structure that lasts for years
- Can be sanded and re-finished
* The formaldehyde in MDF resins was classified as a Group 1 carcinogen by the IARC / WHO in 2004. High-density MDF boards often exceed recommended emission limits for occupied spaces.
How to buy
You message us
On WhatsApp, at any hour. We or the assistant reply.
You pick a piece or the set
Fixed price and standard measurements. No quote and no waiting.
Frequently asked questions
Do they really connect to each other?
Yes. The triangles join each other, the ramps hook onto both pieces, and the arch comes in as a bridge or as a step. That is where the setups on the circuits page come from.
Shall we start?
Tell us your little one's age and we'll tell you which one to start with.
+52 55 3554 8033 · Pachuca de Soto, Hidalgo, Mexico