Graphtec Ledge

A 100 mm length of the ledge, hollow, on the cutter's curved front. Its top runs flat from the platen out past the bench's front edge, and a stem drops into the gap between them. The cutter and the bench are drawn see-through. — 100 mm of ledge on the cutter's front. The cutter and the bench's front edge are drawn see-through.

Download

Ledge STL
100 mm wide, 107 KB. Prints standing on its end in 2 h 13 min, with 80 g of PLA and no supports.
Fit test STL
4 mm wide, 93 KB. Prints flat in 16 min, with 4.3 g of PLA. Print this one first.

Times are Bambu Studio's, for a Bambu Lab A1 mini with a 0.4 mm nozzle and 0.20 mm layers.

What it fixes

The front of the cutter: grey vinyl on the platen, and below it the ribbed front curving down toward the bench. — The cutter's front. Material leaves the platen and follows the ribbed curve down.

The CE7000-40 feeds material out over a curved front. On our bench the cutter sits behind a raised front edge, with a 7.2 mm gap between the two. Material coming off the platen drapes down the curve into that gap, and catches there when the cutter pulls it back in.

The ledge covers the curve and the gap with a flat top, about 2 mm above the platen, that reaches past the bench's edge. Material slides out onto it, and back.

How it fits

The fit test's profile against the cutter's front, in grey. The window through the middle keeps the print light.

A notch, 1.3 mm wide, drops into the 2.15 mm slot between the curved front and the platen and holds the ledge in place front to back. Its tip is tapered so it finds the slot.
The underside follows the curve 0.4 mm clear. We measured the curve at 74.3 mm across and 120.56 mm tall, and drew it as a quarter ellipse.
A stem reaches 26 mm down into the gap in front of the cutter and stops well short of the floor.
The top reaches out past the bench's edge, with a 4 mm round on its front so material slides back over it.
The ledge is hollow, with a 4.25 mm top and walls 3 to 3.6 mm thick.

How it got here

A pen sketch on dot paper of the cutter's front in section, with its measurements: 74.30 mm from the gap to the slot, a 2.15 mm slot, 120.56 mm from the floor of the gap to the platen, a 7.20 mm gap, and 44.3 mm to the top of the bench's edge. — The first measurements: the gap, the bench's edge, the slot, and how far the curve runs and rises.

The ledge, sketched over them before any modelling.

We measured the cutter and the bench with calipers and sketched the profile before drawing anything in CAD. The fit tests are 4 mm slices of that profile. Each prints flat in about 16 minutes and can be tried in the cutter before the whole ledge is printed.

Version 2 was printed and tried. The notch hung on 0.6 mm of plastic, and the block and the stem ran into the bench. From there we marked up the model, and each round of notes made the next version.

Notes on version 2: a 4.25 mm top, the top carried out over the platen, the block raised, and the stem cut to 26 mm.

Notes on version 3: the plate over the platen off and a chamfer into the notch instead, the notch narrowed to 1.3 mm with a tapered tip, and the stem thinned to 3.2 mm.

A close view of version 4's notch with notes in pink: fill in the corner above it, and remove the triangle hanging over the slot. — Notes on version 4: the corner above the notch filled in and the overhang taken off, which squared the end.

The files here are version 5.

Print it

Print the fit test first and stand it in the cutter. The notch should drop into the slot, and nothing should touch the bench.
Then print the ledge standing on its end, the way it opens in the slicer. Every face is upright, so it needs no supports.
For a wider ledge, print more than one and set them side by side. They are not joined yet.

Before you print

It is fitted to our CE7000-40 on our bench. The notch, the curve and the top follow the cutter. The stem and the block follow our bench, whose front edge stands 7.2 mm in front of the cutter. If yours is different, the fit test will show it in 16 minutes.

Version 5, 26 September 2026

Graphtec Ledge.