A4 tri-fold letter guide — 3D-printable model preview

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A4 tri-fold letter guide

Fold A4 letters into even thirds

Lay an A4 letter face down with its top edge against the lip, fold the bottom up over the board edge, turn it over and fold the top down: the board is exactly 99 mm deep, so the thirds come out even and the letter drops cleanly into a DL envelope.

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Size: 216 × 101 × 7 mm
Shape: Rectangular
Walls: 2.0 mm
Volume: 45.8 cm³
Est. weight (PLA): 56.8 g
Parts to print: 1
Category: Office tools
Made by: Krypto
Built in: 15 steps

What’s in it

Rectangular, 216 × 101 × 7 mm, with 2.0 mm walls
Engraved text: “DL TRI-FOLD”

How to print it

Print floor-down as shown, then turn it over to use it.

Filament: at most about 56.8 g of PLA printed solid (roughly $1.14 at $20 per kg); normal infill uses less.

To get the files, open it in the generator and choose File › Download STL (one file per part) or Download 3MF (every part on one plate).

Questions

What size is the A4 tri-fold letter guide model?

The A4 tri-fold letter guide model measures 216 × 101 × 7 mm (width × depth × height). You can change every size in the free SO3D.xyz generator before you download it.

Does it need supports?

Usually not. Print floor-down as shown, then turn it over to use it.

How much filament does it use?

At most about 56.8 g of PLA (45.8 cm³ printed solid), roughly $1.14 of filament at $20 per kg. Normal infill uses less.

Can I change it?

Yes. Open it in the SO3D.xyz generator (free, in your browser), change the size, walls, dividers, holes, text or anything else, then download it as STL or 3MF for your slicer.

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Make it fit your space

Change the size, walls, dividers, holes and labels of the A4 tri-fold letter guide model in your browser, then download it for your printer. Free, no CAD needed.

Customize this model