A small elevation. A full-size flat.
Scenic art has always turned on one problem: getting a tiny paint elevation, drawn at half an inch to the foot, true across a flat, a drop, or a cut-out that reads from the back of the house. The trade solved it long ago with squaring up — grid the elevation, chalk-snap the same cells on the cloth, and copy square by square — and with the scene-shop projector. Both still work. On a full drop hung on the paint frame, gridding and projection remain the standard, and this page does not pretend otherwise. What Grid Maker Pro adds is a third route for the mid-size pieces around that drop: plan the composition for free in the browser with all 82 overlays, then use the AR app to anchor your elevation to a flat or prop through the phone and trace it at scale by hand. Free grids for the thinking. The paid app for the pieces a full grid is overkill on.
Painters who scale a design up for a living.
If your day starts with a small elevation and ends with a surface many times its size, the scaling step is the part you fight. Grid Maker Pro is built for the range of scenic work where composition and enlarging math matter more than the medium.
Theatre & opera
Backdrops, drops, borders, and legs scaled from a designer's paint elevation for the stage.
Film & television
Translights, set backings, and painted skies enlarged from a small reference or concept plate.
Flats & cut-outs
Framed and hard-covered scenery where the surface is manageable and AR tracing fits cleanly.
Props & ground rows
Standalone pieces and layout checks where a full snap-line grid is more work than the job needs.
Why scaling up is the hard part of scenic art.
The elevation can be beautiful and the brushwork can be sure, but if the proportions drift as the design grows, the whole flat reads wrong from the auditorium. Getting a small elevation onto a large surface accurately is the craft nobody outside the paint shop realises is hard. Here is the honest shape of the two traditional routes, and the third one the AR app adds — with a clear line drawn around where each belongs.
Squaring up and the scene-shop projector
Both are professional standards. Both ask for time or conditions the job doesn't always give you.
- Squaring up is exact and scales to any size — the right method for a full drop on the paint frame — but chalk-snapping a whole drop into cells and copying square by square is real ladder-and-floor time before a colour goes down.
- A projector is fast, but it wants a darkened shop, a clean throw, and a flat pale surface, and it ties up a bay while it's rigged.
- On mid-size flats, props, and ground rows, a full snap-line grid is often more setup than the piece warrants.
Anchor the elevation to the flat itself
The Grid Maker Pro AR app pins your paint elevation to the surface through the phone camera. Best on manageable surfaces, not the full frame.
- Look through the screen and the elevation sits locked on the flat at scale. Move around it; it stays put.
- Good for flats, cut-outs, props, and layout checks, where you'd otherwise grid a whole surface for a small piece.
- For a full-stage drop on the paint frame, keep squaring up or projecting — that is still the professional standard, and honestly so.
- It runs on-device. Your elevation never leaves the phone — the same privacy promise as the web tool, and useful when a design is under embargo.
Plan free. Scale it right.
A backdrop is large and read from a distance, so the order matters: settle the composition small where mistakes are free, work the enlarging math, then commit to the surface — squaring up for the big drop, AR for the pieces around it. Three moves.
Compose in the browser
Drop your elevation into the free tool and stack composition overlays. Settle the focal area, the horizon, and the major masses while changes cost nothing.
Free web tool · all 82 grids
Work the enlarging math
Find the scale factor from your elevation. Square up the full drop the trade way, or anchor mid-size pieces to the surface with the app instead of gridding them.
Squaring up · or the AR app
Lay in the drawing at scale
Snap the cartoon on the drop, or trace what you see through the screen onto the flat. The proportions are already correct, so the time goes into paint, not measuring.
Charcoal · snap line · your hand
Free overlays that settle the design.
A backdrop carries further than a canvas — it is read from the back row, not from arm's length — so the large-scale structure has to be deliberate. These overlays live in the free browser tool. Stack them over your elevation, resolve the composition, and only then scale it. Leon Battista Alberti described squaring a design through a gridded veil in 1435;1 the principle behind scaling a small picture up accurately is the same one the paint shop still uses, only the tools around it have changed.
Rule of thirds
The first decision. Seat the focal mass on a third intersection so a stage-sized design reads from the back of the house.
→Golden ratio
Phi proportion and the spiral for balancing several large masses across a wide drop or translight.
→Dynamic symmetry
Root-rectangle diagonals tie a tall or wide backdrop's elements to the proportions of the frame itself.
The AR app does the thing a browser can't.
The web tool plans. The app executes on the pieces where it fits. Built by Sujith Puthran, a working artist of more than fifteen years, the AR app locks a paint elevation over your real flat and lets you trace at scale on-device. The 82 composition grids stay free forever in the browser — the app is the separate, paid product for the surface, and it never paywalls the planning. On a full drop, squaring up remains the honest choice.
Grid Maker Pro AR
Anchor any elevation to a flat, cut-out, or prop and trace it by hand at scale — no full snap-line grid, no darkened bay, no projector to rig. Android on Google Play, with iOS planned. No account to start, and your elevation never leaves the device. The free tier gives you three AR traces of your own photo every month plus all 82 overlays, so you can test it on a real flat before paying.
Free tier 3 AR traces / month + 82 overlays · Paid $29.99/yr · $6.99/mo · $79 lifetime
What scenic painters reach it for.
The big drop still goes on the frame and gets squared up — nothing beats that at full size. But the flats, the cut-out trees, the ground rows all used to eat a morning of snap-lining for pieces that didn't earn it. Now I settle the whole composition on my laptop with the thirds overlay, then anchor the elevation through the phone and chalk the contour straight onto the flat. That time went back into paint.
We price by the day, so the hours spent gridding a backing were pure cost. For mid-size backings and props, settling the layout in the browser and tracing with AR moved that time into actual painting, and the proportions land right the first time because the elevation is pinned to the surface. For the full translight we still square up — we're honest with ourselves about where each method wins.
The questions scenic painters ask.
Can AR tracing replace squaring up a drop?
Not on the paint frame, and not at full drop scale — squaring up and projection remain the professional standard there, and this page does not claim otherwise. Where AR earns its place is mid-size work: flats, cut-outs, props, ground rows, and layout checks, where the surface is manageable and a phone can hold the elevation steady over it. The Grid Maker Pro AR app anchors your paint elevation to the flat through the phone camera so you trace what you see instead of chalking a full grid. For a full-stage drop hung on the frame, keep gridding or projecting; use AR for the pieces around it.
How do I work out the enlarging math from a small elevation?
Find the scale factor first. If the elevation is drawn at half an inch to the foot, one inch on the paper equals two feet on the flat, so every measurement multiplies by twenty-four. Grid the elevation in convenient units, snap the same cell count onto the surface at the scaled size, and the proportion carries even though the drawing is tiny and the flat is huge. The free browser tool and the enlarging method help you settle the composition and place a grid before you commit any of that math to cloth, and the app skips the surface grid on mid-size pieces entirely.
Should I settle the composition before I scale a backdrop up?
Yes, and that part is free. A backdrop reads from the back row of a house, not from arm's length, so the large masses, the horizon, and the focal area have to be deliberate at elevation size where changes cost nothing. Drop your elevation into the free browser tool, stack the rule of thirds, golden ratio, or a dynamic-symmetry overlay, and resolve where everything sits. Only once the small design holds do you square it up or trace it onto the flat. Composition is planning; scaling is execution.
Is the Grid Maker Pro AR app free?
The free web tool with all 82 composition grids is free forever, in any browser, with no signup. The AR app is the separate paid product that locks an elevation over your real flat and lets you trace at scale — the thing a browser cannot do. Its free tier gives you three AR traces of your own photo each month plus all 82 overlays. Unlimited AR is $29.99 a year, $6.99 a month, or $79 once for lifetime access. It runs on Android via Google Play, with iOS planned, and starts with no account.
Does my elevation photo leave my device with the app?
No. The AR app runs on-device, the same privacy promise as the web tool. Your paint elevation, your production photos, and your reference stay on the phone — there is no upload and no account required to start. That matters in scenic work, where designs are often under embargo before a show opens.
References
- Alberti, Leon Battista. On Painting (Della Pittura, 1435). Penguin Classics (1991). ISBN 978-0-14-043331-3. The velo — the gridded veil for squaring a design up accurately.
- Hambidge, Jay. The Elements of Dynamic Symmetry. Yale University Press (1920). Dover reprint, ISBN 0-486-21776-0. Root-rectangle composition keyed to the proportions of the surface.
- Bouleau, Charles. The Painter’s Secret Geometry. Harcourt, Brace & World (1963). The canonical study of compositional armatures and proportion in painting.
- Müller-Brockmann, Josef. Grid Systems in Graphic Design. Niggli (1981). ISBN 978-3-7212-0145-1. The grid as a discipline for organising a design across any scale.
Get a small elevation onto a full-size flat.
Compose the backdrop for free in the browser with all 82 overlays, square up the big drop the trade way, and anchor mid-size flats and props with the AR app. No upload — your elevation stays on your device.