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Mouldery
Open the studio
Parametric mould kits for makers

Design your vessel.Print the mould kit.Cast it.

A parametric studio that generates a complete 3D-printable silicone-mould kit — master, formwork, core and bridge — with exact silicone and casting quantities for concrete, Jesmonite or plaster. Free during the launch.

Open the studioHow it works

Designing, previewing and downloading kits are free for now. The objects you cast may be sold.

Square candle jar 80 mm — the kit, part by part
0models, every dimension editable
0vessel families
0STL files in every kit
Freeevery kit, free during the launch
Inside the kit

Cross-section of a kit during the silicone pour

One pour of silicone makes the whole mould: the outer block around the master and the inner sleeve around the core. This is the kit at that moment, part by part.

See the full process
Cross-section of a kit during the silicone pour123456789
The master is screwed to the base plate. Silicone fills the gap to the formwork and the cavity around the core, in one pour.
Why a kit, not a mould box

The technique candle and planter makers already trust, made parametric.

Mouldery reproduces the master-plus-formwork method behind the best-selling mould kits for concrete vessels, and generates it for the exact shape you configure.

  1. Exact silicone volume

    Every kit states the silicone you need in millilitres and grams, with a loss margin. Silicone is the expensive part: you buy what the pour needs, not a guess.

    01

  2. The master cannot float

    The hollow master is screwed to the base plate with an M5 countersunk screw. It sits flat on the plate, so there is no silicone under the foot and nothing drifts during the pour.

    02

  3. No draft angle required

    Silicone is poured around the master and inside its cavity around a rigid core. The inner sleeve peels out of the finished vessel; the core only stiffens it. Straight walls and light undercuts demould fine.

    03

  4. Perfect rim and wick socket

    The vessel is cast upside-down. Its rim and the 23 mm wick socket are formed against silicone; only the hidden bottom is screeded flat.

    04

  5. A formwork that does not leak

    One-piece ribbed frame, a split locked by tongue-and-groove and two binder clips, a base plate with a centring boss. Fits are 0.15 mm, tight on purpose.

    05

  6. Print settings included

    Line width, perimeters, infill and orientation for each part, no supports. The README tells you what to change if your printer over-extrudes.

    06
What you download

Six parts to print, nine STL files, one README.

Every kit is generated from your parameters when you download it: the six mould parts, their variants (two-half formwork, plain master) and a reference model of the finished vessel. Files are STL, ready for any slicer.

  1. 01

    Master model

    The hollow positive of your vessel, with a hexagonal pocket for the M5 nut. Print at 0.12 mm layers and sand it: silicone copies everything.

  2. 02

    One-piece formwork

    Ribbed frame printed upright, with one split corner, a tongue-and-groove lock and two pockets for the bridge.

  3. 03

    Base plate

    Centring boss, 1 mm recess for the plinth, relief disc for a slightly hollowed foot, countersunk M5 hole and four push-out holes.

  4. 04

    Rigid core

    Hollow cylinder with 1° of draft and a hub for a 4 mm screw. It shapes the cavity, then stiffens the silicone sleeve for every cast.

  5. 05

    Bridge

    A bar that drops into the formwork pockets and holds the core down. A hollow core floats with about 70 g of lift; the bridge stops it.

  6. 06

    Wick centring tool

    A bow-tie that holds a 15 mm wood wick straight while the wax sets. In every kit, for the candle vessels.

  7. 07

    README

    Silicone and concrete quantities, hardware list, print settings per part and the full step-by-step, in English and French.

Exploded 3D view of an 80 mm square candle-jar mould kit: dark base plate, master, terracotta ribbed formwork, amber silicone block, rigid core and bridge, with the finished vessel beside it.
How it works

From the browser to a finished vessel in four steps.

See the full process
  1. 01

    Configure

    Pick a preset from six families — candle jars, planters, vases, trays, cups, desk organisers — then set footprint, height, wall, cavity, wick socket, drainage and relief. Volumes update live in ml and oz.

  2. 02

    Generate and print

    Download the ZIP — free during the launch. Print the six parts in PLA or PETG with the settings in the README. No supports.

  3. 03

    Pour the silicone

    Screw the master to the plate, clip the formwork, drop in core and bridge, pour to the engraved line. The exact quantity is in your README.

  4. 04

    Cast

    Push the master out, flip the mould, pour concrete or Jesmonite, screed the open bottom. Demould the next day; the inner sleeve peels out.

0ml
of silicone for an 80 mm jar, stated to the millilitre
0g
of concrete or Jesmonite per cast
0g
of filament for the six parts, no supports
0h
from the pour to the first demould
Start from a preset

29 vessels in 6 families, every dimension editable.

Candle jars, planters, vases, trays and dishes, cups, desk and storage pieces. Open any model in the studio and change what you need: the dimensions below are the defaults, and a kit costs the same whatever the shape.

All 29 models, rendered from the studio

3D render of the Square 80 leaf modelSquare 80 leaf3D render of the “Not Square” tilted-edge model“Not Square” tilted-edge3D render of the Round jar ⌀80 modelRound jar ⌀803D render of the Fluted jar ⌀90 modelFluted jar ⌀903D render of the Low candle bowl ⌀100 modelLow candle bowl ⌀1003D render of the Swirl jar ⌀85 modelSwirl jar ⌀853D render of the Hexagonal jar leaf modelHexagonal jar leaf3D render of the Square planter 90 modelSquare planter 903D render of the Hexagonal planter modelHexagonal planter3D render of the Flared planter ⌀100 modelFlared planter ⌀1003D render of the Tapered square planter modelTapered square planter3D render of the Succulent trough modelSucculent trough3D render of the Octagonal planter modelOctagonal planter3D render of the Tall vase ⌀70 modelTall vase ⌀703D render of the Square vase 60 modelSquare vase 603D render of the Oval vase modelOval vase3D render of the Swirl vase modelSwirl vase3D render of the Bellied vase ⌀80 modelBellied vase ⌀803D render of the Hex bud vase modelHex bud vase3D render of the Oval tray modelOval tray3D render of the Round dish ⌀110 modelRound dish ⌀1103D render of the Square catch-all modelSquare catch-all3D render of the Pen tray modelPen tray3D render of the Tumbler ⌀80 modelTumbler ⌀803D render of the Espresso cup modelEspresso cup3D render of the Square tumbler modelSquare tumbler3D render of the Fluted pen pot modelFluted pen pot3D render of the Toothbrush holder modelToothbrush holder3D render of the Hex organiser modelHex organiser
3D render of the Square vase 60 modelSquare vase 603D render of the Oval vase modelOval vase3D render of the Swirl vase modelSwirl vase3D render of the Bellied vase ⌀80 modelBellied vase ⌀803D render of the Hex bud vase modelHex bud vase3D render of the Oval tray modelOval tray3D render of the Round dish ⌀110 modelRound dish ⌀1103D render of the Square catch-all modelSquare catch-all3D render of the Pen tray modelPen tray3D render of the Tumbler ⌀80 modelTumbler ⌀803D render of the Espresso cup modelEspresso cup3D render of the Square tumbler modelSquare tumbler3D render of the Fluted pen pot modelFluted pen pot3D render of the Toothbrush holder modelToothbrush holder3D render of the Hex organiser modelHex organiser3D render of the Square 80 leaf modelSquare 80 leaf3D render of the “Not Square” tilted-edge model“Not Square” tilted-edge3D render of the Round jar ⌀80 modelRound jar ⌀803D render of the Fluted jar ⌀90 modelFluted jar ⌀903D render of the Low candle bowl ⌀100 modelLow candle bowl ⌀1003D render of the Swirl jar ⌀85 modelSwirl jar ⌀853D render of the Hexagonal jar leaf modelHexagonal jar leaf3D render of the Square planter 90 modelSquare planter 903D render of the Hexagonal planter modelHexagonal planter3D render of the Flared planter ⌀100 modelFlared planter ⌀1003D render of the Tapered square planter modelTapered square planter3D render of the Succulent trough modelSucculent trough3D render of the Octagonal planter modelOctagonal planter3D render of the Tall vase ⌀70 modelTall vase ⌀70
Candle jars — concrete vessels cast from a Mouldery kit (illustration)
7 models

Candle jars

Wick socket formed in the mould, 150 to 350 ml, engraved or fluted.

Planters — concrete vessels cast from a Mouldery kit (illustration)
6 models

Planters

Drainage hole cast in place, straight or flared walls.

Vases — concrete vessels cast from a Mouldery kit (illustration)
6 models

Vases

Tall tapered forms cast around a slim core.

Trays & dishes — concrete vessels cast from a Mouldery kit (illustration)
4 models

Trays & dishes

Shallow catch-alls, soap dishes and pen trays.

Cups & tumblers — concrete vessels cast from a Mouldery kit (illustration)
3 models

Cups & tumblers

Thin tapered walls; seal before use with liquids.

Desk & storage — concrete vessels cast from a Mouldery kit (illustration)
3 models

Desk & storage

Pen pots, toothbrush holders, hex organisers.

Materials

Works with the silicone and castables you already use.

Silicone
Tin-cure (condensation) RTV, Shore A 15–25, is the most tolerant with printed masters. Platinum (addition) silicone lasts longer but can be inhibited by some prints — SLA resin above all, occasionally PLA or PETG. Seal resin masters with spray paint or acrylic sealer and run a contact test on a scrap print.
Castables
Fine concrete and rapid-set CSA cements, Jesmonite AC100, plaster, casting resin. Mix ratios and demould times are in the casting guide.
Filament
PLA for every part. PETG if your workshop gets warm. 0.6 mm line width and two perimeters on the formwork, 0.12 mm layers on the master.
Hardware
One M5 × 12 countersunk screw and nut, one 4 mm × 16 wood screw, four 25 mm binder clips, a non-silicone release spray.
Pricing

Free during the launch. Sell what you cast.

Designing, previewing and generating kits are free for now. A per-kit price will come later; everything you download today stays yours.

Mould kit
Freeper generated kit, no payment during the launch
  • 9 STL files generated from your exact parameters: 6 mould parts plus their variants
  • README with silicone and concrete quantities, print settings and steps
  • Print as many copies as you need for your own workshop
  • Personal and commercial use of the cast objects, no expiry
  • Download link right away, plus a copy by email
Open the studio

No card, no account. The paid version will come later.

Example feedback

What early-access makers check first.

Illustrative examples, not customer quotes. They will be replaced by real feedback as the early-access cohort reports back.

  • Example

    I weighed exactly what the README said and the silicone reached the line with a spoonful to spare.

    Early-access maker, candle vessels

  • Example

    The formwork printed upright in one go and clicked shut. Two clips, no tape.

    Early-access maker, planters

  • Example

    Casting upside-down is the trick: the rim comes out of the mould, I only level the foot.

    Early-access maker, trays

FAQ

Questions makers ask before their first kit.

Short answers. The guides go deeper on silicone, formwork and casting.

Still unsure? Write to hello@mouldery.com.

What exactly is in a kit?

A ZIP with nine STL files — master model (plus a plain variant), one-piece formwork (plus a two-half variant), base plate, rigid core, bridge, wick centring tool and a reference model of the finished vessel — plus a README with the hardware list, silicone and concrete quantities, print settings per part and the step-by-step.

Which 3D printer and filament do I need?

Any FDM printer with a 220 × 220 mm bed covers the current presets. PLA works for every part; PETG if your workshop gets warm. The formwork prints upright with a 0.6 mm line width and two perimeters, no supports on any part.

Which silicone should I use?

A pourable mould silicone of Shore A 15 to 25. Tin-cure (condensation) silicone is cheaper and tolerant with printed masters. Platinum silicone lasts longer but can be inhibited by some prints: seal resin masters with spray paint or acrylic sealer and test on a scrap print first.

How much silicone will I need?

Your README gives the computed volume plus a loss margin, in millilitres and grams. For an 80 mm candle jar it is roughly 430 ml computed, 470 ml to buy. Tray presets need less, deep planters more.

Do I need draft angles?

No. The vessel is released by deforming the silicone block, and the inner sleeve peels out of the cavity once the rigid core is removed. Straight walls and light undercuts demould fine. The core itself carries 1° so it slides out of its sleeve.

Your next vessel is one evening of printing away.

Configure it in the studio, print the kit tonight, pour silicone tomorrow.

Open the studioSee pricing
Newsletter

New presets and casting notes

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