Voron V2.4 Panel Cutting Guide — Dimensions, Materials, and Assembly

V2.4 Build Enclosure

The panels are the final major step in a Voron V2.4 build. They enclose the printer for ABS printing (maintaining chamber temperature), protect the moving gantry, and give the printer its finished appearance. Cutting panels accurately — to the right dimensions, from the right material, with clean edges — is critical for a professional result. Mistakes here are expensive: acrylic and polycarbonate sheets cost $20-50 each, and a wrong cut means buying a replacement. This guide provides exact dimensions for all V2.4 panel sizes, material recommendations, cutting methods, hinge and clip options, sealing tips, and a step-by-step assembly order. Last updated: May 2025.

Panel Overview — What You Need

A V2.4 enclosure requires 5 panels:

• Left panel: Covers the left side of the frame. Has cutouts or mounting for the electronics bay access.
• Right panel: Covers the right side. Usually identical dimensions to the left panel.
• Front panel / Door: The door panel. Hinged for access to the build chamber. Typically the largest and heaviest panel.
• Top panel: Covers the top of the frame. Lightweight. May have cutouts for Nevermore filter exhaust or LED strip mounting.
• Rear panel / Back: Covers the back of the printer. Usually fixed in place behind the Y-axis cable chain.

Panel Dimensions by Build Size

The V2.4 frame is built from 2020 aluminum extrusions. The panels sit inside the frame, held by printed clips. The dimensions below account for the frame's internal clearance. These are the standard Voron-spec dimensions. Slight variations exist between kit manufacturers (LDO, Formbot, Siboor) — measure your frame's internal opening before cutting and verify against these dimensions.

V2.4 250mm Build

V2.4 300mm Build

V2.4 350mm Build

Important: These dimensions assume standard 2020 extrusion and Voron-spec frame construction. If using an LDO kit, the frame tolerances can vary by 0.5-1mm. Measure your frame's internal opening (width between left/right extrusions, height between top/bottom extrusions) and subtract 2mm total for clearance before cutting. It's better to cut 1mm oversize and sand down than to cut undersize and have a visible gap.

Panel Material Selection

Acrylic (PMMA)

Acrylic is the most common panel material for Voron builds, primarily because it's cheaper and easier to source. Clear acrylic is also highly transparent, giving a clean view of the printer interior.

• Cost: $15-30 per 3mm sheet (600x600mm). Significantly cheaper than polycarbonate.
• Clarity: Excellent optical clarity. Crystal clear when new.
• Scratch resistance: Poor. Acrylic scratches easily — even wiping dust with a dry cloth can leave micro-scratches. Use a microfiber cloth and acrylic-safe cleaner (Novus plastic polish) only.
• Impact resistance: Low. Acrylic is brittle. It can crack or shatter if impacted, especially at the edges where cutting creates micro-fractures. Not suitable for the door if the printer is in a high-traffic area.
• Heat tolerance: Softens at 80-100°C. In a Voron enclosure at 55-65°C, acrylic is fine. At higher chamber temperatures (70°C+), the panels may begin to bow or warp, especially the larger 350mm panels.
• Cutting: Lasers cut acrylic beautifully. Score-and-snap works for thin sheets (3mm) but produces a frosted edge. CNC routing works but the edges need flame-polishing for clarity.

Polycarbonate (Lexan, Makrolon)

Polycarbonate (PC) is the premium choice for Voron panels. It's more expensive but significantly more durable than acrylic.

• Cost: $30-60 per 3mm sheet (600x600mm). Roughly double the price of acrylic.
• Clarity: Good, but not as optically clear as acrylic. Some polycarbonate has a slight yellow tint (UV-stabilized grades).
• Scratch resistance: Moderate. Better than acrylic but still scratches. Many builders choose to leave the protective film on during installation and only peel it off once the build is complete.
• Impact resistance: Excellent. Polycarbonate is practically unbreakable in 3mm+ thickness. It bends rather than cracks or shatters. If you bump the door with a filament spool, the panel will flex, not shatter.
• Heat tolerance: 120-130°C glass transition temperature. No risk of warping in any Voron enclosure, even with active chamber heating for high-temperature printing.
• Cutting: Polycarbonate does NOT laser-cut well — it produces toxic chlorine gas (from chlorine-containing grades) and melts rather than vaporizes. Use CNC routing, score-and-snap, or a jigsaw with a fine-tooth blade. Laser cutting will produce burned, melted edges even on laser-safe PC.

Panel Thickness Recommendations

• 3mm: Standard for side panels (left, right), top panel, and rear panel. Lightweight, easy to clip into place, sufficient rigidity for non-door panels.
• 4-5mm: Recommended for the front door panel. The door is the largest unsupported panel and the most frequently handled. A 3mm door flexes and looks flimsy when opening/closing. 4-5mm provides the rigidity needed for a satisfying door action and prevents sagging over time.
• 6mm: Overkill for Voron enclosures. The extra weight puts stress on the hinges and clips, and the visual benefit over 4-5mm is negligible. Only use if you want a bulletproof enclosure for a printer in a high-traffic environment.

Cutting Methods

• Laser cutting (acrylic only): The cleanest method for acrylic. Laser-cut edges are polished, dimensionally accurate to ±0.1mm, and require no post-processing. Many online services (SendCutSend, Ponoko, local makerspaces) offer laser cutting. Cost: $5-15 per panel.
• CNC router: Works for both acrylic and polycarbonate. Produces clean edges but they may need flame-polishing (acrylic) or sanding (polycarbonate) for a transparent edge finish. Dimensionally accurate to ±0.2mm.
• Score-and-snap (acrylic): For thin acrylic (3mm). Score a line with a scoring knife, snap along the line. The result is a frosted, rough edge that needs sanding with 400-800 grit sandpaper and flame-polishing for clarity. Risk of micro-cracks at the corner if not scored properly.
• Jigsaw with fine-tooth blade: Works for both materials but produces a messy edge. Use a blade with 10+ teeth per inch. Clamp the sheet firmly and cut slowly. Sand the edges with progressively finer grit (120 → 240 → 400 → 800) for a clean finish. A router with a flush-trim bit can clean up jigsaw-cut edges.

For most builders, we recommend ordering laser-cut acrylic panels from a service. The total cost for all 5 panels (3mm sides + 4mm door + 3mm top/back) is typically $50-80 including shipping. The precision and finished quality are worth the cost compared to DIY cutting.

Door Options — Hinged vs Sliding

Hinged Door (Most Common)

The standard Voron door uses 3D-printed hinges that mount to the front extrusion. The door swings open from the side. Options:

• 3D-printed hinges: The Voron spec includes printable hinge models (left-hinge.stl and right-hinge.stl). These use M3 screws and a printed hinge pin. They work well but printed hinges wear over time. Print in ABS or PC, not PLA (which will soften in the enclosure).
• Piano hinge (continuous hinge): A 400-500mm aluminum or stainless steel piano hinge spanning the full height of the door. Much more durable than printed hinges. Mounts between the door and the front extrusion. Cost: $8-15 on AliExpress. Use M4 screws to attach.
• Magnetic hinges: Rare but clean. The door is held on with strong neodymium magnets embedded in the door and frame. The door lifts off completely for full access. Requires precise magnet alignment and 10x 8x3mm N52 magnets per side. Not recommended for heavy 5mm doors.

Sliding Door (Alternative)

Some builders prefer a sliding door that opens side-to-side or lifts up. Sliding doors use T-track or linear rail mounted on the top extrusion, with rollers or bearing slides attached to the door. Sliding doors don't require clearance in front of the printer but are mechanically more complex to build and seal properly.

Panel Clips and Mounting

Panels are held to the frame by clips that press into the 2020 extrusion T-slots. The Voron spec uses printed press-fit clips.

• Standard press-fit clips: The Voron project provides STL files for panel clips. These press into the extrusion slots and the panel slides into place behind them. Each panel needs 4-6 clips (2 on each side minimum). Print in ABS. Cost: negligible (filament only).
• Quick-release thumb-screw clips: A popular mod. Uses M3 thumb screws instead of press-fit. Allows tool-less panel removal. Print the clip body and use M3x8 thumb screws (AliExpress, $5 for 50). Much more convenient for accessing the printer interior.
• Magnetic clips: Use 6x3mm neodymium magnets embedded in printed clips. The panel is held by magnetic force. Quick to remove but weaker than screw-based clips. Sufficient for top and side panels but not recommended for the door.

Panel Sealing — Keeping the Enclosure Airtight

For ABS printing, an airtight enclosure is essential. Leaks let heat escape, making it harder to maintain a stable chamber temperature. Seal all panel edges where they meet the frame.

• Closed-cell foam tape: 3mm thick, 6-10mm wide. Apply to the inside edge of each aluminum extrusion before installing the panel. Closed-cell foam doesn't absorb moisture and maintains its seal over years of enclosure heat cycles. Cost: $5-10 per roll (10m).
• Silicone seal: Apply a bead of high-temperature silicone (rated to 200°C+) along the extrusion channel before fitting the panel. Cleaner than foam tape but permanent — you can't remove the panel without breaking the silicone seal. Best for the rear panel which you rarely need to remove.
• Weather stripping: EPDM rubber weather stripping (D-profile) from a hardware store. Cheaper than foam tape but may outgas at enclosure temperatures for the first few heat cycles. Let it bake at 60°C for 24 hours before putting any printed parts inside.

The door seal is the most critical. Add a magnetic catch or latch to hold the door firmly closed against the foam seal. A door that doesn't fully seal loses 50% of the enclosure's thermal efficiency.

Panel Assembly Order

1. Apply sealing tape to all extrusion faces that contact panels. Do this before installing any panels.
2. Install the rear/back panel first. It sits behind the Y-axis cable chain and is the least accessible once the printer is fully assembled. Slide it into place and secure with clips.
3. Install the left and right panels. These attach to the sides. If your left panel has an electronics bay cutout, ensure the panel orientation is correct (cutout at the bottom). Secure with clips.
4. Install the door. Attach hinges to the left or right side (whichever you prefer for opening). Mount the door to the front extrusion. Adjust hinge tension so the door stays open at 90 degrees without slamming closed. Add the door handle.
5. Install the top panel last. It sits above the gantry and is easiest to install last. If you have a Nevermore filter, install the filter mount in the top panel before attaching the panel to the frame.

Test all panels for fit before final tightening. If a panel is slightly oversized, file or sand the edge — do not force it into the clips, which can crack the panel edge. If a panel is slightly undersized, add an extra layer of foam tape to take up the slack.

Nevermore Filter Mount Placement

The Nevermore carbon filter is commonly mounted on the top panel or the rear panel. The Nevermore V5 and V6 designs have specific cutout patterns:

• Top mount: The Nevermore sits on top of the printer, recirculating air through the top panel. Cut a 120mm x 120mm hole (for 120mm fan Nevermore) or 140mm x 140mm (for 140mm fan). The filter pulls air from inside the enclosure and exhausts back through the top panel. This is the most common placement.
• Rear mount: Mount the Nevermore on the inside of the rear panel. The filter recirculates air within the enclosure. No external exhaust hole needed — the filter inlet and outlet are both inside the chamber. This placement is cleaner but slightly less effective than top-mount because the rear panel location is not at the highest point of the enclosure (hot air rises).
• Side mount: Some builders mount the Nevermore on the left or right panel near the bottom, pulling cool air and pushing it through the carbon bed. Not recommended — the carbon filter works best at the top of the enclosure where the air is hottest (most volatile fumes present).

Door Handle Options

• 3D-printed handle: Many STL files available on the Voron user mods repository. Print in ABS or PC. Simple bar or hook design. Cost: negligible (filament only).
• Aluminum bar handle: A 100-150mm aluminum extrusion bar, 15-20mm wide, mounted with M4 screws through the door. Much more durable than printed handles. Cost: $5-10 on AliExpress.
• Plastic cabinet handle: A standard kitchen cabinet handle from a hardware store. Usually stainless steel or zinc alloy. Cost: $3-8. Choose a handle with enough clearance for your fingers to grip comfortably.