A working sample and a set of renderings are enough to start a conversation, but they are not enough to start a program. When a brand sends us a concept for a monitor arm, the sample answers questions about intent: roughly how the arm should move, roughly how it should look on a desk, roughly what the brand wants the end user to feel when the screen is repositioned. What the sample cannot answer is which of its hundreds of physical characteristics are requirements and which are accidents of how that particular unit was built. A prototype hole may be at a given position because the designer chose it, or because a hand-built fixture drifted. Until that distinction is written down, no manufacturer can quote it, and no inspector can accept or reject it.
The purpose of a document set is to convert a sample into a set of decisions that survive being handed to another person. That is the work this checklist describes, and it is the work our engineering team walks through when a brand arrives with a concept rather than a controlled drawing package.
Fix the product form before fixing the drawings
Mechanical and gas-spring monitor arms are different product forms, and the drawing review our team performs is not interchangeable between them. Each form resolves into its own component list, its own joint and pivot interfaces, and its own set of purchased and fabricated parts, so the arm form has to be fixed before ThunderTech can review the drawing set as a complete assembly. If your program is still open between the two, send the intended form together with the drawing or SKU and revision, and our engineering team can confirm which component and interface details we would need to review for that specific route.
An unresolved form choice does not stay contained in the concept stage. It leaves the downstream document set open, because the bill of material, the DFM notes, the tooling scope, the inspection plan, and the packing specification are all written against a particular assembly. Until the form, the revision, and the finish are confirmed, ThunderTech can describe the proposed route only in conditional terms and cannot close those documents. Sending the confirmed form and revision lets our team convert the proposed route into a defined document package for the program.
Related to form is the question of which parts are meant to be visible. On a desk product the user sees the arm at close range under office lighting, so the brand needs to state which surfaces are cosmetic, which are functional, and which are hidden inside the assembly. That single classification changes finish specification, handling, packing, and the entire inspection conversation downstream.
Build the drawing set at the component level
An assembly drawing alone is not a production document set. The assembly says how the product goes together; it does not say what to make. What can be quoted and inspected is a component-level package in which every part has its own drawing, its own material and thickness or profile, its own finish callout, and its own revision.
Tolerance priorities on a monitor arm are best confirmed from the interfaces and stated requirements in your project rather than applied uniformly across the part. The mounting pattern to the display, the clamp or grommet interface to the work surface, the pivot and fastener features between arm segments, and any welded or riveted joints each carry their own fit conditions, and the drawing should indicate which of those features are controlled and which are free. Send the drawing with the intended interface callouts and any assembly constraints from your side, and ThunderTech can review which characteristics we would treat as controlled in the proposed route and confirm that treatment in the quotation.
Purchased and semi-finished items need the same treatment. Gas spring units, bearings, fasteners, plastic covers, and cable management parts all need to be defined by specification rather than by the phrase “same as the sample,” since the sample supplier may not be the program supplier. Where a brand wants a nominated item, we would need the nomination in writing so the item can be treated as controlled rather than substitutable.
Write inspection criteria in language an inspector can apply
Inspection criteria are a program input, not something to be assumed after the parts exist. The quality plan should name the characteristics to be checked, the drawing revision they are checked against, the measurement method or gauge, and the acceptance condition for each one, including how surface and finish appearance is judged. ThunderTech can review the criteria you propose, or draft a plan for your review if you tell us which features matter for your assembly and end use, and our team can then confirm the agreed inspection scope as part of the program details.
Movement products complicate the visual standard because the product is handled during assembly and again by the end user. If a brand wants a strict cosmetic grade on a visible aluminium surface, that has implications for how parts are separated, handled, and packed at every step, and those implications belong in the quotation rather than being discovered later. Where a brand has an existing standard, we can review it against the proposed configuration; where a brand has none, we would ask for approved limit samples or written descriptions so the criteria can be agreed rather than assumed.
Treat packing and change control as part of the document set
Packing is frequently the last document written and the first one that causes trouble, because it depends on decisions the brand may not have made yet: whether the arm ships assembled or knocked down, what the retail or B2B presentation needs to be, what carton markings and barcodes are required, and what artwork approval process applies. Each of those changes carton size, insert design, and the labour content of the packing operation, so it is quotable only once fixed.
Change control is the discipline that keeps the whole set usable. Without a revision convention and a single named approver on the brand side, a program accumulates drawings that disagree with each other. Our team would ask, before quoting, which revision governs, how changes will be issued, and who is authorised to approve them, so that both sides are working to the same document.
Bringing a nominated configuration to ThunderTech
ThunderTech Pros manufactures the mechanical monitor mounts, gas-spring monitor arms, monitor stands and risers, and related video-display mounting products published in our range, and we develop OEM and ODM programs on those product families. If your concept sits inside that territory, the most productive next step is to nominate a configuration rather than a category, and let our engineering team review it against what you have.
To open that review, please send whatever exists of the following so we can tell you what is quotable now and what still needs to be defined:
- The nominated product form: mechanical or gas-spring, single or multi-screen, and the intended mounting method
- Any drawings, 3D data, or sample photographs, with the revision or date you consider current
- Material, thickness or profile, and finish intent for visible and hidden parts
- Any nominated purchased components or brands you require
- Your inspection expectations, cosmetic standard, or existing limit samples
- Packing intent, artwork requirements, and destination market labelling needs
- Quantity or forecast by configuration, and the change approval contact on your side
Send the requirements and we will confirm which parts of the package our team can work from directly, which items we would need clarified before a quotation is meaningful, and what program route we would propose for the configuration you have nominated.
Monitor Arm Drawing, Sample, and Quotation Questions
Which drawing revision should we send if the monitor arm design is still changing?
Send the revision you treat as current, marked with its revision code and date, together with a short note on the points you know are still open. ThunderTech can review that revision against the mechanical or gas-spring arm form you have in mind and identify which dimensions, materials, and finishes are fixed and which are not. If a later revision arrives while the review is running, our team can compare it against the revision already priced and confirm what changed for the program. Holding one controlled revision per quotation keeps the review traceable on both sides.
Does an approved sample replace the production documents for an OEM arm program?
No. A signed sample records what one build looked like, while the production documents state what every later build is measured against. ThunderTech can review the sample record and the drawing together and confirm which features of the arm, base, and mounting plate are actually controlled by the document set and which were only observed on that one piece. Send both and our team can confirm what still needs to be written into the drawing, the finish specification, and the inspection plan before the program is fixed.
What do we need to prepare to open an OEM quotation review?
Send the drawing or SKU with its revision, the material and finish you have specified, the quantity or forecast you are planning against, and your inspection and packing requirements. ThunderTech can review those inputs and come back with the proposed program route, the tooling and DFM questions the geometry raises, and the items that remain undefined. Where an input is not settled yet, say so in the request and our team can state the assumption used, so the quotation can be corrected once the real figure is available.