PETG base polymer + carbon-nanotube (CNT) reinforcement · surface resistivity in the ANSI/ESD S20.20-2021 dissipative band (~10⁵ Ω/sq) at our calibrated 270°C nozzle. Room-temperature ESD service · lower-cost alternative to PA612-ESD when continuous service stays below 65°C.
PETG-ESD safe 3D printing service · UK · quoted within 2 working hours.
ESD-dissipative without the high-temperature engineering polymer · CNT-reinforced PETG, calibrated print path.
Four quick visuals. Start with which material to pick and where PETG-ESD works; the engineering detail is at the end if you want it.
A fraction of the ethylene glycol monomer is replaced with cyclohexanedimethanol (CHDM), which breaks the crystal symmetry. Plus carbon nanotubes (CNT) percolated through the matrix · this is what creates the conductive network for ESD dissipation. The result: same printable PETG with ANSI/ESD S20.20-2021 dissipative-class static control.
"James handled the 3D printing for a functional heat resistant component we needed in batch production. He helped dial in the prototype first with their design service, then produced the final batch with really consistent results. Super fast 3D print turnaround and great quality across all the 3D printed parts. Will 100% be coming back."
"We needed a sit-in F1-car for an exhibition to showcase our new racing game. 3D Printing Express took our CAD, optimised it for strength and weight as we had no idea how it all worked! Turned out beautifully. They colour matched the finish and was looking like the real deal. On show day the cockpit ran non-stop, adults and kids jumped in. Multiple visitors asked who built it."
"We ordered a batch of 100 PA-12 parts from 3D Printing Express and could not be happier. Every part arrived consistent, dimensionally accurate, and ready for use straight from the box. The PA-12 gave us the strength and stability we needed for functional testing, with minimal post-processing required. Delivery was on time, communication was excellent, and their QC clearly made a difference."
At our calibrated 270°C nozzle · squarely within the ANSI/ESD S20.20-2021 dissipative band (10⁴ to <10¹¹ Ω/sq). Plain PETG sits at ~10¹⁴ Ω/sq · firmly insulative.
Roughly 2× plain PETG's 2.6 kJ/m² · the CNT loading toughens the matrix as well as making it ESD-dissipative.
Tg 77°C. Sustained service caps at ~65°C ambient. For warm-service ESD fixtures (under-bonnet, near soldering equipment) specify PA612-ESD at 110°C continuous.
Equivalent to plain PETG (38.6 MPa XY) · CNT loading toughens without compromising tensile. Stiffness identical (Young's 1983 MPa).
PETG-ESD earns its place when a part needs to be in the ESD-dissipative band at room temperature · the cost-effective option when PA612-ESD's 110°C service overkills the spec.
PETG-ESD's strengths are room-temperature ESD service at commodity cost · its weaknesses are anything above 65°C, food-contact, and applications where the dissipative-class band isn't the right band. Pick a different material if any of these apply.
Bench fixtures that hold boards during SMD placement, through-hole soldering, rework, or reflow. The dissipative band (~10⁵ Ω/sq) bleeds operator and tool static to ground before it reaches sensitive components. We measure resistivity per batch for audited supply chains.
ESD-safe versions of standard bench tooling · soldering-iron tip cradles (off the hot tip, 65°C ambient ceiling), tweezers handles, screw and resistor sorting trays, component drawers. The matt-black colour acts as a visual signal: black tooling = ESD-safe.
Paperwork accessories that live next to sensitive boards. Plain plastic clipboards generate charge on contact and discharge across the next conductive surface (often a PCB) · PETG-ESD bleeds the charge off through the fixture rather than the part. Common in audited assembly lines.
When the run is too small to justify injection-moulded ESD tooling (5,000+ units to break even), PETG-ESD lets a UK shop turn a custom dissipative jig in days at commodity filament cost. Pair with a resistivity certificate per batch for audit-ready supply.
The three options most engineers compare when picking an ESD-class material. Plain PETG is firmly insulative · electronics-touching parts hold static. PA612-ESD covers warm-service (110°C continuous) but doubles the filament cost. PETG-ESD is the room-temperature commodity option · dissipative band at our calibrated 270°C nozzle, ~£40-55/kg.
Mechanical values from manufacturer Technical Data Sheets · ISO test specimens (ISO 527 tensile, ISO 75 HDT, ISO 179 Charpy notched). Surface resistivity per ANSI/ESD S20.20-2021 two-point-probe method, 50% RH. PETG-ESD's wedge is room-temperature dissipative-class ESD at ~half the filament cost of PA612-ESD · with the trade that service temperature caps at ~65°C ambient.
| Property | PETG-ESD (here) | Plain PETG | PA612-ESD |
|---|---|---|---|
| Surface resistivity | ~10⁵ Ω/sq · dissipative | ~10¹⁴ Ω/sq · insulative | ~10⁵ Ω/sq · dissipative |
| ESD class (ANSI/ESD S20.20) | Dissipative | Insulative | Dissipative |
| Service temperature (ambient) | ~65°C continuous | ~65°C continuous | ~110°C continuous |
| HDT @ 1.8 MPa | 72°C | 72°C | 110°C |
| Charpy notched impact | 5.7 kJ/m² | 2.6 kJ/m² | 8.5 kJ/m² |
| Tensile strength XY | 36.1 MPa | 38.6 MPa | 58.0 MPa |
| Stiffness (Young's modulus XY) | 1983 MPa | 1983 MPa | 2400 MPa |
| Available colours | Matt black only (CNT) | Wide range | Matt black only |
| Nozzle requirement | Hardened steel · CNT abrasive | Brass acceptable | Hardened steel · CNT abrasive |
| Print path | Standard FDM · any 250°C+ hotend, no chamber | Standard FDM · easy | Engineering · 280°C+ hotend, heated chamber preferred |
| Food-contact certification | No · CNT additive disqualifies | Yes (plain grades) | No · CNT additive disqualifies |
| Cost per kg (filament) | £40-55 | £25-35 | £90-130 |
| Best for | Room-temperature ESD fixtures · PCB jigs · bench tooling · 10-200 unit small-batch ESD | Non-ESD enclosures, water-contact, signage, food-contact prototypes | Warm-service ESD · under-bonnet fixtures · near-equipment jigs above 65°C |
This is our standard process for PETG-ESD · the equipment and the dried-filament discipline are included, no surcharge. Slicer profile and orientation are tuned per part at quote stage.
File or sketch in. Tell us service temperature, whether resistivity certification is needed, and batch size.
Engineer-reviewed within 2 working hours · per-unit cost + resistivity-certification line item if requested.
Single-piece print path locked where possible (bonded joints break ESD continuity), wall thickness and overhang flagged before print.
Filament dried at 65°C for 3 hours (mandatory) · calibrated 270°C nozzle on hardened-steel hotend · landing in the dissipative band.
Support removal, deburr to spec. For audited supply: two-point-probe resistivity check at 10V / 50% RH and certificate of resistivity included.
Tracked UK courier, tracking number sent the moment it leaves.
Lead times start when CAD is signed off · ESD certification adds ~half a day for the measurement and certificate. Single-piece print designs ship faster than bonded multi-part assemblies (which we generally redesign to avoid ESD-continuity gaps).
Batch of bench fixtures for an audited contract-manufacturing line. Each jig holds a populated PCB during through-hole soldering and inspection · had to land within the ANSI/ESD S20.20-2021 dissipative band with a measured resistivity certificate per batch. Printed at our calibrated 270°C nozzle on hardened-steel hotends, two-point-probe verification at 10V / 50% RH on every batch. Resistivity reading across the run: 8.4 × 10⁴ to 2.7 × 10⁵ Ω/sq · all within the dissipative class. Single-piece prints (no bonded joints) to preserve ESD continuity.
PETG-ESD is glycol-modified PETG loaded with multi-wall carbon nanotubes (CNTs) at roughly 3-5% by weight, engineered to dissipate static charge. The nanotubes form a percolation network across the polymer matrix · electrons hop from CNT to CNT, carrying charge across (and to ground from) the part surface. Measured surface resistivity at our calibrated 270°C nozzle: ~10⁵ Ω/sq · squarely in the ANSI/ESD S20.20-2021 dissipative band (10⁴ to <10¹¹ Ω/sq). Below 250°C the network is patchy and reads insulative; above 290°C it over-percolates conductive. Mechanical properties roughly equivalent to plain PETG (36.1 MPa XY tensile, 1983 MPa Young's, HDT 72°C @ 1.8 MPa) with ~2× notched Charpy uplift from the CNT loading. Matt black only · CNT loading is intrinsically black. Not food-contact certified.
"PETG-ESD is the room-temperature ESD-safe filament I reach for when the brief is a PCB jig, a tip-rest cradle, or a small-batch fixture for an audited assembly line. The catch is the print path · the carbon nanotubes are abrasive (we run hardened-steel nozzles, swapped out before they score) and the dissipative band only holds at a tightly-calibrated 270°C. Print PETG-ESD at the generic 240°C profile on a stock brass nozzle and you get a part that's labelled ESD but doesn't measure ESD. The calibration is what we're actually selling."
Three questions worth answering before specifying PETG-ESD · how the percolation network actually carries charge, why the 270°C calibration is the load-bearing variable, and where the 65°C service ceiling really matters.
Base PET is the most-produced thermoplastic on Earth · food bottles, packaging, polyester fibre. Glycol modification (CHDM replaces some ethylene glycol) breaks the crystal symmetry, prevents crystallisation, and makes PET 3D-printable on FDM without the warping of crystalline PET.
PETG absorbs water from humid air, saturating at ~0.41% per the manufacturer TDS. Wet PETG prints stringy, milky, brittle. The fix is straightforward · pre-print drying at 65°C for 3 hours (manufacturer setting). We do this on every spool before the bed.
Plain PETG is an insulator · its glycol-modified PET backbone has no free charge carriers, so a static charge picked up by the part surface stays there until it finds a path to ground (often through whatever sensitive component is nearby). PETG-ESD breaks this by dispersing multi-wall carbon nanotubes (MWCNTs) at roughly 3-5% loading throughout the polymer matrix. Once the loading exceeds the percolation threshold (typically 1-3% for high-aspect-ratio MWCNTs), enough CNTs physically touch end-to-end across the matrix to form a continuous conductive network · electrons hop from CNT to CNT, carrying charge across the part surface and to ground if it's earthed.
The measurable result is surface resistivity in the 10⁴-10⁸ Ω/sq range · what ANSI/ESD S20.20-2021 calls the "dissipative" class. This is the right band for general electronics-bench tooling: high enough to limit current (no fast-discharge spikes that fry components) but low enough to bleed static charge away over milliseconds rather than holding it. For applications that need active grounding paths through the part (high-voltage discharge, EMI shielding) specify a "conductive" grade at <10⁴ Ω/sq · these need higher CNT loading and trade mechanical properties for it.
The percolation network only delivers dissipative-band resistivity if the CNTs are dispersed in roughly the right state · neither clumped nor over-spread. Nozzle temperature controls polymer viscosity at extrusion, which controls how shear and thermal forces redistribute the CNT clusters during print. At 250°C the polymer is too viscous · CNT aggregates persist through the nozzle and the print path shows patchy conductivity (large pockets read insulative). At 290°C the polymer flows too freely · CNT clusters break apart further than ideal, the network over-percolates, and resistivity drops below the dissipative class into the conductive band (which is wrong for ESD-bench applications · it can sink high-current discharges directly into the protected component).
270°C is the sweet spot we've calibrated in-house against two-point-probe resistivity measurements (10V, 50% RH). Stick to that profile, run hardened-steel nozzles (CNTs are abrasive · brass scores within hundreds of grams), and the part lands in the dissipative band reliably. Hand a PETG-ESD spool to a maker running a generic PETG profile at 240°C through brass on a Bambu / Prusa / Ender, and the parts will look ESD-safe but won't measure ESD-safe · this is the failure mode we see when audited-line customers come to us after a DIY trial.
PETG-ESD inherits its thermal limits from the underlying glycol-modified PET · glass transition (Tg) sits at 77°C, HDT 76°C at 0.45 MPa and 72°C at 1.8 MPa, Vicat softening at 86°C. Below Tg the polymer chains are locked in the amorphous network and the CNT network is geometrically stable. Above Tg, the polymer softens · chains gain mobility and any residual stress relaxes into creep. The CNT network doesn't immediately fail · the geometry just deforms with the matrix, so a sagging jig still measures dissipative · but the part is mechanically useless.
Practical sustained service caps at ~65°C ambient · safe for general workshop and electronics-assembly use, wrong for any fixture that sits next to a hot soldering iron, in a reflow oven preheat zone, or under-bonnet. For warm-service ESD applications step up to PA612-ESD (Tg ~110°C, continuous service to 110°C). For room-temperature applications · the vast majority of electronics-bench tooling · PETG-ESD covers the spec at less than half the filament cost.
Values measured to the ISO standards cited in the right-hand column, on the manufacturer's own injection-moulded test specimens · directly comparable to other engineering thermoplastics.
| Property | XY · print plane | Z · build axis | Unit | Standard |
|---|---|---|---|---|
| Mechanical | ||||
| Tensile strength | 36.1 | 20.7 | MPa | ISO 527 |
| Young's modulus | 1983 | 1626 | MPa | ISO 527 |
| Elongation at break | 7.3 | 1.8 | % | ISO 527 |
| Flexural strength (XY) | 54.0 | MPa | ISO 178 | |
| Flexural modulus (XY) | 1651 | MPa | ISO 178 | |
| Charpy impact (notched, XY) | 5.7 | kJ/m² | ISO 179 | |
| Thermal | ||||
| Heat deflection (HDT @ 0.45 MPa) | 76 | °C | ISO 75 | |
| Heat deflection (HDT @ 1.8 MPa) | 72 | °C | ISO 75 | |
| Glass transition temperature (Tg) | 77 | °C | DSC, 10°C/min | |
| Vicat softening temperature | 86 | °C | ISO 306 | |
| Physical | ||||
| Density | 1.24 | g/cm³ @ 23°C | ISO 1183 | |
| Equilibrium water absorption | 0.41 | % | manufacturer test | |
| Melt index | 14 | g/10min | 280°C, 5kg | |
| Surface resistivity @ 270°C nozzle | ~10^5 (dissipative · ANSI/ESD S20.20-2021) | Ω/sq | ring-probe (TDS V1.1) | |
| Tensile anisotropy ratio | 1.74× | XY/Z | derived from ISO 527 | |
| Chemical resistance · manufacturer-rated | ||||
| Weak acids | Good | · | manufacturer TDS | |
| Strong acids | Poor | · | manufacturer TDS | |
| Weak alkalis | Fair | · | manufacturer TDS | |
| Strong alkalis | Poor | · | manufacturer TDS | |
| Oils and grease | Good | · | manufacturer TDS | |
| Cosmetic / supply | ||||
| Stock colour range | Black only (CNT loading) | · | workshop stock | |
| Custom RAL match | Yes (procured to order) | · | on request | |
| Finish grades available | Glossy as-printed, sanded, painted, translucent | · | workshop stock | |
| ESD classification | Dissipative at our calibrated 270°C nozzle | · | ANSI/ESD S20.20-2021 | |
PETG-ESD's anisotropy is moderate (1.74× XY/Z · 36.1/20.7 MPa per TDS V1.1) · slightly higher than plain PETG (~1.19×) because the CNT loading raises XY/Z spread. For load-bearing parts, favour XY-direction load paths.
PETG-ESD's elongation (7.3%) still handles thin-wall impact better than PLA (6.3%), but layer-line geometry still dominates. The values shown follow the Hubs / Protolabs Network FDM minimums (0.8 mm supported, 2.0 mm minimum feature) · we DFM-check the wall thickness against your part's load case at quote stage.
45° is the slicer-default support threshold across every major FDM tool · PETG's slower cooling and stickier hot state typically holds long bridges (5 mm+ at print temperature) better than PLA. Exact threshold depends on cooling, geometry, and surface-finish tolerance · we DFM-check overhangs at quote stage and recommend orientation.
PETG's amorphous structure means no crystallisation shrinkage on cooling (good) but the lower stiffness means slightly more deflection during finishing (modest). Exact tolerance depends on part size, geometry, and calibration · we confirm achievable tolerance against your CAD at quote stage.
Removes 0.1-0.3 mm per surface · pre-paint prep or stand-alone hand-feel polish.
For audited supply chains we measure surface resistivity per print run · two-point probe at 10V on the part surface, room-temperature, 50% relative humidity. Reading must fall between 10⁴ and 10¹¹ Ω/sq for the dissipative class. Certificate-of-resistivity line item available on the quote.
PETG takes paint with adhesion-promoting primer (PETG resists direct paint adhesion more than PLA). Adds 0.05-0.15 mm per surface · sand to 800 grit, primer + topcoat · paint also acts as a UV barrier for outdoor service.
For multi-part ESD fixtures we use heat-set brass inserts (CNC Kitchen ~285°C method for PETG-ESD, Markforged 2mm minimum boss thickness) rather than bonded joints · adhesive lines break the dissipative network unless the adhesive is ESD-compatible. Metal washers under fasteners carry the ground path between parts.
The dissipative band only holds at a tightly-calibrated nozzle temperature. Our 270°C PETG-ESD profile is verified against two-point-probe resistivity readings · not the manufacturer's generic 240°C PETG profile that DIY makers run.
For audited supply chains we measure surface resistivity at 10V / 50% RH on every print run and ship a certificate of resistivity with the parts. Readings logged in the workshop QC database.
Send three things: service temperature, resistivity-class required (dissipative vs conductive), and certification needed. Our team come back within 2 working hours · if PA612-ESD, plain PETG, or a conductive grade fits better, we say so.
Every brief goes straight to an engineer, who reviews it before we quote.
According to the Fiberon PETG-ESD TDS, PETG-ESD reaches Young's modulus 1983 ± 75 MPa (XY) per ISO 527 with ESD-dissipative surface resistivity 1.0E+4 to 7.4E+7 Ω across nozzle 250-290 °C and HDT 76 °C @ 0.45 MPa.
Yes. We run a closed loop in our own workshop. Failed prints, purge, and support waste are collected, reground, and reprocessed here instead of going to landfill. That is standard on every PETG-ESD job, no surcharge.
ESD-safe is a controlled-resistance band, not a binary. ANSI/ESD S20.20-2021 defines three classes by surface resistivity: conductive (<10⁴ Ω/sq), dissipative (10⁴ to <10¹¹ Ω/sq), and insulative (≥10¹¹ Ω/sq). PETG-ESD sits in the dissipative band at ~10⁵ Ω/sq when printed at our calibrated 270°C nozzle · the right band for electronics-bench tooling, jigs, fixtures, and trays. Plain PETG measures ~10¹⁴ Ω/sq · firmly insulative · and will hold and discharge static through whatever ESD-sensitive component you place on it.
Standard PETG does not: it is an electrical insulator, at around 10¹⁴ Ω/sq surface resistivity. PETG-ESD is dissipative: printed at our calibrated 270°C nozzle it sits at around 10⁵ Ω/sq, inside the ANSI/ESD S20.20-2021 dissipative band, so it bleeds static to ground. It is not conductive class (below 10⁴ Ω/sq), so it is not a current path.
PETG-ESD relies on a percolation network · carbon nanotubes that physically touch through the polymer matrix to carry charge. At 250°C the polymer is too viscous · CNTs cluster and the network is patchy (resistivity drifts insulative). At 290°C polymer flow is too fluid · CNTs over-disperse and the network ends up over-percolated (conductive class, not dissipative). 270°C is the sweet spot · this is why we run every PETG-ESD job at our calibrated 270°C profile. Print a PETG-ESD spool at the manufacturer's generic 240°C and you may get a part that doesn't behave ESD-safe even though it's labelled ESD.
Service temperature is the decider. PETG-ESD: 65°C ambient max (Tg 77°C), printable on any 250°C+ FDM, ~£40-55/kg filament. PA612-ESD: 110°C continuous service, requires 280°C+ hotend and ideally a heated chamber, ~£90-130/kg filament. For room-temperature electronics-bench fixtures, jigs, IC trays, soldering stations · PETG-ESD wins on cost and ease. For under-bonnet or near-equipment fixtures that sit warm during use, specify PA612-ESD.
Slightly lower · tensile 36.1 MPa PETG-ESD vs 50.8 MPa plain PETG XY (~29% lower) and modulus 1983 vs 2117 MPa (~6% less stiff) · the CNT loading trades a little strength for the dissipative network. Notched Charpy actually improves ~2× over plain PETG (5.7 vs 2.6 kJ/m²) · the CNT toughens the matrix. The other trade-off is colour: PETG-ESD is matt black only. If you need ESD-safe AND a colour, spray with an ESD-compatible topcoat after print.
No. The CNT loading disqualifies PETG-ESD from food-contact applications. The base PETG resin is food-contact certifiable in plain form, but once carbon nanotubes are dispersed in the matrix, EU 10/2011 and FDA food-contact compliance no longer apply. For food-contact prototypes specify plain PETG. The chemical-resistance picture is inherited from plain PETG:
| Chemical / family | Resistance | Notes |
|---|---|---|
| Weak acids (acetic, citric, dilute organic) | Good | Manufacturer TDS rating · short-term storage |
| Strong acids (sulphuric, HCl, nitric) | Poor | Manufacturer TDS rating · polymer chain breakdown |
| Weak alkalis (dilute soap, mild bleach) | Fair | Manufacturer TDS rating · short-term only |
| Strong alkalis (caustic soda, ammonia) | Poor | Manufacturer TDS rating · ester bond hydrolysis |
| Oils and grease | Good | Manufacturer TDS rating · sustained contact OK |
| Cold water, sea water (cold) | Excellent | PET-backbone hydrolytic stability · proven in bottles |
| Hot water (sustained > 60°C) | Limited | Approaches HDT · hydrolysis accelerates over months |
| Steam autoclave (121°C) | Fails | Above HDT · parts deform · choose PEEK / PPSU |
| Detergents, soap (mild) | Good | Dishwasher-style detergents · short-cycle only (heat above 60°C is the limit) |
| Alcohols (IPA, ethanol, methanol) wipe | Good | Surface cleaning, no soak |
| Acetone, MEK (ketones) | Poor | Partial dissolution · industrial degreaser, nail polish remover |
| Toluene, xylene (aromatic hydrocarbons) | Poor | Degrades over time |
| Petrol, diesel (brief contact) | Limited | Brief OK · sustained attacks the polymer |
| Chlorinated solvents (DCM, chloroform) | Poor | Strong solvents · industrial use only, workshop hazards |
| Swimming pool chemistry (chlorine, bromine) | Limited | Short-term OK · sustained immersion attacks the polymer |
| UV exposure (UK outdoor) | Limited | 6-12 months uncoated · multi-year requires overcoat or ASA |
| Outdoor weathering (sheltered) | Good | Rain-tight under cover, hydroponic outdoor, garden irrigation |
| Food contact (base PET chemistry) | Excellent | NOT food-contact certified (CNT additive) base · printed grade needs certification + sealing for true food-contact |
First five rows are direct manufacturer TDS ratings. Remaining rows reflect industry-typical PETG behaviour and our workshop experience · brief contact is always more forgiving than sustained exposure. For sustained chemical service beyond water and oils, switch material to ABS, PA12, or PP depending on the exposure.
Less than ABS, slightly more than plain PETG. The CNT network increases stiffness modestly, which raises internal cooling stress slightly compared to plain PETG. Bed adhesion on PEI or textured glass is good. Large flat parts stay flat. The main print issue is wet filament producing stringing and brittle layer adhesion · this is why we dry every PETG-ESD spool at 65°C for 3 hours before printing (manufacturer setting).
Yes. Carbon nanotubes are abrasive · running PETG-ESD through a standard brass nozzle scores the bore within a few hundred grams of throughput and degrades flow consistency. We use hardened-steel or tungsten-carbide nozzles for every PETG-ESD job. DIY makers using brass nozzles produce parts whose ESD performance drifts as the nozzle wears.
Mechanically yes, ESD-continuous-ly no. Two-part epoxy holds well · cyanoacrylate works but is weaker than on PLA or ABS. The catch: bonded joints break ESD continuity unless the adhesive is itself ESD-compatible. For multi-part ESD fixtures, design them as single-piece prints with snap-fits or heat-set inserts, or use mechanical fasteners with metal washers to maintain the ground path.
Tg sits at 77°C · above this PETG-ESD softens. HDT is 76°C at 0.45 MPa and 72°C at 1.8 MPa. Vicat softening at 86°C. A PETG-ESD part in sustained service above 70°C will creep and lose dimensional accuracy. PETG-ESD won't survive a hot UK summer in direct sun, and is the wrong choice anywhere near a soldering iron tip rest. For warm-service ESD fixtures choose PA612-ESD (110°C continuous).
Carbon nanotubes are intrinsically black · the loading required to hit the dissipative percolation network (~3-5% by weight) makes any other colour impractical. The matt-black finish is actually a useful signal on a workbench: black tooling means ESD-safe, coloured tooling means not. If you need a coloured ESD-safe part, the workflow is print in PETG-ESD, then spray with an ESD-compatible topcoat (Hi-Tech 7100 or similar) that preserves the dissipative path.
Surface resistivity is measured with a two-point probe (e.g. ACL Staticide 800 series) at 10V on a clean, room-temperature, 50% RH part. Reading should fall between 10⁴ and 10¹¹ Ω/sq for the dissipative class. For audited supply chains we can include a measured certificate of resistivity per part run · request this in the brief and we'll budget the QC step in the quote.
Filament cost is roughly £40-55/kg for PETG-ESD · about 1.5 to 2× plain PETG (£25-35/kg). For typical electronics-bench fixtures that's a unit-cost adder of £3-8 per part. For a fraction of the cost of PA612-ESD (£90-130/kg) you get most of the ESD benefit, provided service temperature stays below 65°C. Send the brief with use-case and we'll quote the actual job.
You'll hear back from our team within 2 working hours · with ESD calibration plan, material-fit check, drying/lead-time confirmation, and PA612-ESD step-up recommendation if you need above 65°C service.