Cápsulas de vácuo CNC imprimíveis em 3D - Sistema de suporte de trabalho modular para mesas de tupia com grelha de 100 mm, bancadas Festool MFT e T-Slot

3D-Printable CNC Vacuum Pods for 100 mm Grid Tables – Modular Hold-Down System for Router, MFT & Workbenches

Description

Upgrade your CNC or workshop setup with a modular vacuum hold-down system designed specifically for 100 mm grid tables – the standard found on many CNC routers, welding tables, and Festool MFT workbenches.
These 3D-printable pods provide strong, flexible workholding without clamps or screws, letting you fixture parts quickly and safely for milling, engraving, sanding, or assembly.

🧠 Overview

This bundle includes both single vacuum pods and daisy-chain connectable versions, allowing you to build a full fixture grid.
Each pod features an integrated O-ring seat, NPT push-fit vacuum port, and reinforced flanges for easy bolting or screw-down. The geometry is optimized for 3D printing in PETG, Nylon, or ASA with minimal support and high durability.

⚙️ Key Features

Designed for 100 mm grid systems – fits CNC router tables, Festool MFT/3, welding tables, and modular workbenches (verify: 20 mm hole pattern on MFT tables corresponds to 100 mm spacing).

Single & Daisy-Chain models – connect multiple pods with NPT push-to-connect fittings for large surface hold-down zones.

Modular design – compatible with 50 mm and 100 mm T-slot tables; easy to reconfigure layouts.

Sealed vacuum chamber – integrated O-ring groove (2.5 mm cross-section recommended) ensures leak-free performance.

Print-optimized – chamfered bases and shallow overhangs print cleanly on any FDM printer without supports.

Fast connection – standard 1/4" NPT or BSPT fittings for vacuum lines; compatible with most vacuum pumps or venturi ejector setups.

Compact form factor – ideal for small routers, desktop CNCs, or full-size shop tables.

🔩 Recommended Print Settings

Material: PETG, Nylon (PA12/CF), or ASA

Layer height: 0.28 mm

Perimeters: 6 minimum

Infill: 40–60 % gyroid or cubic

Supports: none required

Post-processing: insert 6mm O-ring, thread NPT push fitting, test seal at 0.6–0.8 bar vacuum.

🧰 Applications

CNC routing and engraving (wood, acrylic, composites)

PCB milling and precision part fixturing

Flat workpiece sanding and finishing

Lightweight welding and assembly setups

Modular jigs for repeat part positioning

🧩 Included in Download

STL files for single vacuum pod and daisy-chain variant
3MF files for single vacuum pod and daisy-chain variant

💡 Advantages vs. Conventional Clamps

No mechanical obstruction – full-surface tool access

Faster setup for multi-part runs

Repeatable fixturing positions using grid holes

Works with any 100 mm hole or T-slot spacing

Lower vibration and chatter under load

100 % printable and maintainable

🧾 License & Notes

For personal or small-business use.
Commercial use allowed for printed parts sold under your own brand.
Not for high-temperature or metal machining applications.

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🧰 3D Printing Recommendations

These CNC Vacuum Pods are engineered for precision workholding and high vacuum stability, designed specifically for 100 mm grid router tables, Festool MFT benches, and T-slot workstations.
Each model is optimized for FDM 3D printing with strong perimeter bonding and minimal support requirements.

⚙️ Recommended Print Settings

Printer Type: FDM / Cartesian / CoreXY (≥ 0.4 mm nozzle)
Material: PETG, Nylon (PA12/CF), or ASA for best strength and temperature resistance
Layer Height: 0.25 – 0.30 mm
Perimeters / Walls: 4–5 minimum
Top / Bottom Layers: 5–6 each
Infill: 40 – 60 % (Gyroid or Cubic) for airtight chamber integrity
Supports: Not required – all overhangs ≤ 45°

Brim: 5–8 mm recommended for PETG to prevent corner lift
Cooling: 30 – 50 % fan (disable for first 5 layers)
Adhesion: Textured PEI / glue stick / 70 °C bed for PETG; 90 °C for Nylon

Print Orientation: Base flat on build plate; logo facing up

🔩 Post-Processing & Assembly

Inspect O-ring seat; clean sealing surface.

Install 2.5 mm cross-section O-ring (e.g., 68 mm ID × 2.5 mm CS).

Thread in ¼" NPT push-to-connect fitting or BSPT equivalent.

Test for vacuum leaks at –0.6 to –0.8 bar (shop-vac or venturi source).

Mount to your 100 mm grid table with M6 bolts or T-slot clamps.

💡 Printing Tips

Use 100 % fan off on first 5 layers to ensure perfect bed adhesion.

For Nylon/PA12-CF, dry filament at 70 °C for 6 h before printing.

If sealing issues occur, lightly flame-polish the top O-ring groove edge.

Avoid PLA – it softens under sustained vacuum or heat.

Test one pod before batch printing; verify fit on your grid pattern.

🧩 Compatible Systems

100 mm grid CNC router tables (Ooznest, Onefinity, Shapeoko, Avid CNC, Stepcraft)

Festool MFT/3 workbenches (100 mm hole spacing, 20 mm bores)

Welding tables & T-slot benches using 50 mm or 100 mm layouts

Print once, use for years — these modular pods provide a leak-tight, reconfigurable workholding system that transforms any 100 mm grid into a professional CNC vacuum table.