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Version 2026-08-25

Terms of Service and Custom Manufacturing Terms — kavtek.eu

25.08.2026

1. Seller

The operator of kavtek.eu and the seller under every contract concluded through it is:

KD18 holdings s.r.o.
Registered office: Růžová 972/1, Nové Město, 110 00 Praha 1, Czech Republic
IČO: 17745837 · DIČ: CZ17745837 (VAT payer in the Czech Republic)
Contact for orders, complaints and legal matters: info@kavtek.eu
Website: kavtek.eu

Referred to below as Kavtek, we, us or the Seller.

2. What these Terms cover, and who we serve

These Terms govern the use of kavtek.eu, quotations issued through it, and contracts for custom-manufactured parts concluded through it. The Privacy Notice explains how personal data is handled; reading it is not a contractual consent and it does not form part of these Terms.

Kavtek is a custom manufacturing service: we produce parts from the digital model files and specifications you supply, using 3D printing (currently FDM, on Kavtek-operated equipment) and CNC machining. CNC machining may be performed by vetted manufacturing partners; Kavtek remains your sole contractual counterparty and is responsible for the agreed result.

Where we sell.

A Consumer is a natural person acting outside their trade, business or profession (§ 419 Civil Code). A Business Customer is anyone acting within one, including a legal entity; by ordering for a business you confirm you are authorised to bind it. Supplying company details does not by itself deprive a person who is in fact a consumer of mandatory consumer rights.

3. Pre-contractual information (distance contracts)

As required by § 1811 and § 1820 of the Civil Code:

4. How an order comes about

  1. Request. You upload a model file, choose technology, material and parameters, and submit. A request binds neither side and creates no obligation to pay. Guest requests are confirmed by a single-use email link (valid 48 hours); unconfirmed requests and their files are deleted after 7 days.
  2. Review and Quote. A Kavtek engineer reviews the request — a manufacturability review for the quoted process, not design validation or certification — and may ask questions or propose changes. The Quote is an itemised offer: line items, price and currency, lead time, and a validity period. It may be accepted only within that period.
  3. Acceptance. The contract is concluded when you accept the current Quote in your account, accept the version of these Terms identified there, and activate the final control, which for Consumers is labelled with wording equivalent to "Accept quote and place order with obligation to pay." At acceptance you supply the delivery address (with the phone number carriers require), a separate billing address if different, and — for businesses — company name, registration number and VAT ID.
  4. If acceptance changes the picture. If information supplied at acceptance affects the tax treatment, delivery cost or total price (for example the destination country or a VAT ID), the Quote is reissued in a revised version and only the revised Quote can be accepted. An expired, withdrawn or superseded Quote cannot be accepted.
  5. Confirmation. After acceptance we send an order confirmation by email identifying the accepted Quote, the applicable Terms version and the order number.
  6. Payment, production, delivery — sections 7 and 8.

5. Orders we decline

We may decline any request, in particular: weapons, their components and accessories; parts that evidently infringe third-party intellectual property; items whose manufacture, possession or use is unlawful or that evidently serve an unlawful purpose; and content that is hateful or gratuitously violent. We may also decline where the requested technology cannot achieve the required result or our capacity does not allow it. Declining before acceptance creates no liability; anything paid for undelivered work is refunded in full.

We do not accept safety-critical or regulated applications — medical devices or implants, personal protective equipment, pressure equipment, aerospace flight parts, load-bearing safety components, child-safety products — unless expressly accepted in writing after a separate review.

6. Your files, rights and confidentiality

You retain all rights in your model files and drawings. You grant Kavtek a non-exclusive, royalty-free licence — transferable only to authorised manufacturing partners — to copy, analyse, convert and use them solely to evaluate the request, quote, manufacture, inspect, deliver, support the order, comply with law and handle a claim.

We treat customer files and specifications as confidential. Manufacturing partners receive only the technical information reasonably needed to quote or produce, must protect it and use it for no other purpose. We never publish a customer's part, or use it in marketing or a case study, without separate express written permission.

By uploading a file you confirm that you own the necessary rights or hold a licence permitting third-party manufacture, that manufacture infringes no third party's rights to your knowledge, and that the part is not intended for an unlawful purpose.

Business Customers only: to the extent permitted by law, a Business Customer will indemnify Kavtek against third-party claims and reasonable documented costs arising directly from a breach of the confirmations above, except to the extent caused by Kavtek's unauthorised use.* No automatic indemnity is imposed on Consumers beyond liability arising under applicable law.

7. Prices, VAT, payment

The price is the one stated in the accepted Quote, in the currency shown.

VAT. As a Czech VAT payer we apply: Czech VAT (currently 21 %) to supplies to Czech customers and to EU consumers within the applicable distance-sales rules; for an intra-EU supply to a Business Customer, reverse charge (0 %, "daň odvede zákazník") only after the VAT ID has been verified against the EU VIES register — verification is performed by our staff before the treatment is applied. If a supplied VAT ID is invalid or incomplete, the legally applicable VAT is charged.

Payment terms. On acceptance we issue a pro forma payment request — it is not a tax document. Payment is by bank transfer to the account stated on it, quoting the given reference. Payment is due within 48 hours of acceptance; within that period the accepted Quote's terms remain unchanged. If payment is not credited in time, the order lapses and a new or revised Quote may be required; a late payment does not by itself revive a lapsed order.

Tax documents. The tax document (final invoice) is issued upon dispatch of the order or in 15 days from first transaction.

Production starts only after cleared payment; quoted lead times run from that moment. You bear charges imposed by your bank; we bear ours.

8. Delivery, risk, address

We deliver by established carriers to the address you supplied, with a tracking number where the carrier provides one. Lead times are good-faith estimates unless the Quote states a fixed date; we will tell you promptly of material delay. Consumers retain all statutory remedies for non-delivery.

You may correct the delivery address in your account at any time before dispatch; every correction is recorded and the previous version retained. A change affecting the destination country, tax treatment or delivery charge requires a revised Quote. Once shipped, the recorded address is fixed.

For Consumers, risk passes when you (or a third party you designate, other than the carrier) take physical possession. For Business Customers, risk passes on delivery to the stated destination unless the Quote says otherwise. Visible transport damage should be recorded with the carrier at handover and reported to us promptly; failing to do so does not by itself remove mandatory consumer rights.

Administrative closure. If an order remains in "shipped" state without confirmation, we may administratively mark it as completed after 21 days from dispatch. Administrative closure is a bookkeeping step: it does not constitute proof of delivery, does not shorten any claim period and does not limit any consumer right.

9. Withdrawal and cancellation

Before acceptance you may withdraw a request or reject a Quote at any time, free of charge.

Consumers — statutory withdrawal. The 14-day withdrawal right for distance contracts does not apply to goods made to the consumer's specifications or clearly personalised (§ 1837(d) Civil Code). The exception applies to a genuinely customer-specific part made from, or materially defined by, your uploaded model, drawing or unique dimensions — which describes the parts we manufacture. Where, exceptionally, the exception would not apply, the statutory withdrawal instructions and model form are available from us on request and mandatory law prevails.

Voluntary cancellation after payment. A custom order carries no automatic right of cancellation once the exception applies. You may nevertheless request cancellation; we may agree, refunding the amount paid less only documented, non-recoverable work and costs already performed or committed (material, production preparation, machine time, partner charges), up to the full price where production is complete. No deduction is made for work not performed.

Cancellation by Kavtek after contract formation only for legitimate reasons — non-payment, illegality, a substantiated IP or safety concern, technical impossibility not reasonably identifiable earlier, force majeure, or your failure to provide required information. If we cancel for a reason not caused by you, amounts paid for the unperformed portion are refunded without undue delay.

10. Quality, technological characteristics, defects

Conformity. A part conforms if it corresponds to your model and the parameters agreed in the Quote, within the tolerances stated there or, absent a statement, those customary for the chosen technology. Our published capability figures (e.g. CNC ±0.05 mm; Rz 12.5 as-machined; FDM ±0.2 mm or ±0.5 % whichever is greater) state what we undertake for work quoted against them.

Not defects where the part otherwise conforms: layer lines, seam marks and anisotropy typical of additive manufacturing (printed parts are weaker across layers than along them); support-removal witness marks where supports are necessary; tool marks and minor surface variation customary for the selected finish; dimensional variation within tolerance; ordinary colour variation between material batches.

Design responsibility. We manufacture to your model and parameters; you are responsible for the design's fitness for your purpose. If we warn you of a manufacturability or suitability risk and you instruct us in writing to proceed, responsibility for the specifically warned consequence is allocated to you to the extent the law permits. A manufacturability review is not certification for any application.

Consumers. You may assert a defect existing on delivery within two years of receipt; a defect appearing within one year is presumed to have existed at delivery. Complain to the contact in section 1 with a description and photographs where possible; we confirm receipt in writing and resolve the complaint, including removing the defect, within 30 days unless we agree a longer period with you. Remedies follow the Civil Code: repair or replacement first; price reduction or withdrawal where those fail or are impossible.

Business Customers must inspect promptly and notify defects without undue delay after they could have been discovered.

Not covered: ordinary wear; misuse; loads or environments beyond the disclosed design basis or the material's properties; unauthorised modifications; damage after risk passed — except where mandatory law provides otherwise.

11. Liability

Nothing in these Terms limits liability that cannot lawfully be limited — including for intentional conduct, gross negligence, harm to natural rights, or non-excludable consumer rights. No contractual cap applies to Consumers where it would reduce mandatory rights.

Business Customers only: subject to the above, Kavtek's aggregate liability arising from an order is limited to the price paid for that order, and Kavtek is not liable for loss of profit, loss of production or indirect or consequential loss.

12. Accounts and acceptable use

Keep credentials confidential; actions under your account are attributed to you; notify us of suspected unauthorised access. You must not attempt to access others' data, bypass security, upload malicious files, submit automated bulk requests, or materially disrupt the service. We may suspend accounts where reasonably necessary.

13. Governing law, disputes, ADR

These Terms and every contract under them are governed by Czech law, excluding the UN Convention on Contracts for the International Sale of Goods. A Consumer retains the mandatory protections of the law of their habitual residence.

For Business Customers, disputes fall to the courts having jurisdiction over Kavtek's registered office unless agreed otherwise in writing; consumer jurisdiction follows mandatory law.

A Consumer dispute not resolved directly may be submitted for out-of-court resolution to:

Česká obchodní inspekce — oddělení ADR
Gorazdova 1969/24, 120 00 Praha 2, Czech Republic
Email: adr@coi.gov.cz · Web: coi.gov.cz

(The European Commission's ODR platform has been discontinued and is intentionally not referenced.)

Supervision of our trade is exercised by the competent trade licensing office; data-protection supervision by the Office for Personal Data Protection (see the Privacy Notice).

14. Amendments and final provisions

We may amend these Terms for future orders. The version identified in your order confirmation governs that order. The current version, with its identifier and date, is always published on kavtek.eu; acceptance records reference the exact version accepted. If any provision is invalid, the remainder stands; an invalid provision is not automatically rewritten against a Consumer.

These Terms exist in Czech, German and English versions. In the event of any discrepancy between them, the Czech version prevails. This does not deprive a Consumer of the protection afforded by mandatory provisions of the law applicable to them, nor of reliance on the language version in which these Terms were presented to them at the time of contracting.