Quality guarantee

A guarantee from a person, not a policy

Corsair Custom 3D is a one-person, home-based shop, and Jose guarantees the work personally. That has a practical consequence: when something is wrong, there is no department to route you to and no script to read. You contact the person who made or repaired the item, and Jose decides how to fix it. This page explains what the guarantee covers, where its limits are, and how quality is checked before work leaves the shop, so you can judge the promise for yourself.

No fixed time period, on purpose

You will not find a "30 days" or "90 days" clause here, and that is deliberate. A 3D print can behave differently once it is in real use. A part that looks perfect on the bench may creep under a constant load, soften in a hot car, or crack at a layer line after months of vibration. A printer repair may seem solid until the next long print exposes a second weakness. A rigid cut-off date does not fit that reality. Instead, Jose is very lenient on reprints, and warranty issues are covered when the cause is the printing, the material choice or the workmanship. If something has not held up, get in touch and it will be looked at fairly, whenever it happens.

What is covered

• Prints that do not match the agreed specification. A wrong size, wrong material or colour, or defects such as warping, cracking along layer lines or poor surface quality beyond what was agreed, will be reprinted or reworked.
• Parts that fail in use for reasons that trace back to the print. If a bracket splits because of how it was oriented or built, that is a warranty issue and it gets reprinted, often with a stronger setup.
• Workmanship problems in finishing or assembly. Inserts that pull out, glue joints that fail through poor preparation, and fittings that were installed wrongly are corrected.
• Printer repairs that do not hold. If the fault you hired Jose to fix comes back because of the repair, the machine is looked at again to find out why.
• Misdescribed work. If the result differs from what the quote said, it is put right.

What the remedy looks like

The remedy depends on the problem. A mis-sized part is reprinted with a corrected model. A weak part is reprinted in a different orientation, with more walls, or in a tougher plastic. A repair that fails is diagnosed again, and the underlying cause is fixed. Reprints are treated as a normal part of making functional parts, not as a favour you have to argue for. If a part cannot reasonably be made to work in FDM, you will be told plainly and the next step is discussed with you honestly. The aim is a working part or a working printer, not an argument.

Where the limits are

An honest guarantee needs honest limits. A lenient approach is not the same as covering everything, and the following are generally outside it, although Jose will usually still help you work out what happened.

• Damage after handover: impacts, crashes, overloading, chemical exposure, or heat well beyond what the part was designed for.
• Customer-supplied designs with flaws that were flagged beforehand. If a concern was raised and you chose to proceed, the print follows your file.
• Uses outside the agreed purpose. A part quoted for indoor use is not designed for long-term sunlight or engine bay heat unless that was discussed.
• Normal wear. Printed parts and printer consumables such as nozzles and belts wear out over time.
• Safety-critical or certified applications. FDM parts are not certified components. Parts that could injure someone if they fail should not be made this way unless a qualified professional has approved them.

For R/C aircraft in particular, printed parts are made to the agreed design, but flying involves risks the shop cannot control. Inspect your model before every flight, and see the R/C planes and jets page for more.

How quality is checked before handover

A guarantee is cheapest when problems are caught early. Every job goes through a short checklist.

1. Quote review. The material, dimensions, quantity and finish are reread against your request before printing starts.
2. First-layer and early-print checks. Most failures in FDM show up in the first layers, so they are watched closely.
3. Dimensional checks. Critical dimensions are measured with calipers, and mating features are test-fitted whenever possible.
4. Visual inspection. Surfaces are examined for stringing, blobs, gaps, delamination and warping.
5. Finishing and cleanup. Supports are removed, edges are cleaned, and any inserts or assembly are completed and tested.
6. Repair verification. After a printer repair, a test print shows that the symptom is gone, and calibrations are recorded for you.

Why FDM quality depends on tuning

Quality in FDM is the sum of many small settings: a well-calibrated extruder, a level bed, tight belts, dry filament and a sensible slicing profile. When any one drifts, parts suffer. This is one reason the shop does its own printer maintenance and tuning, described on the printer repair page. A printer that is calibrated and checked regularly makes better parts, and better parts make the guarantee easy to keep.

How to raise an issue

Email Jose at corsaircustom3d@gmail.com. Include the job details, photos of the problem with something for scale, and a short description of how the part was used or how the printer behaved. Raising an issue promptly helps find the cause while the evidence is fresh, but there is no deadline that makes a genuine problem too late to mention. You will get a reply with a plan: a reprint, a rework, a repeat repair, or an explanation. If a return of the item is needed, that is arranged with you in advance.

Fairness in both directions

Good outcomes depend on good information. The more you tell Jose about how a part will be used, the better the material and design choices will be, and the fewer problems there will be to put right. In return, you can expect clear quotes, honest warnings about limits, and quick responses. If a design needs adjusting after you spot a problem, say so early. The how it works page lists what to include, and the FAQ answers common concerns about timing, materials and shipping.

About the person behind the promise

Jose runs the shop, operates the printers, designs the parts and performs the repairs. To learn more about the work and approach, read about Jose. For examples of the results, visit the gallery.