Choose SolidWorks or Inventor by the cost of switching

Choosing SolidWorks or Inventor for a department of ten workstations from a feature table makes no sense. Both systems can design production-grade parts, assemblies, and drawings. The winner is determined by the cost of preserving working context: models, links, templates, libraries, people's skills, and the established exchange with customers.

If the department already works reliably in one of these systems, switching almost never pays back through a license price difference alone. You need a measurable reason: customers require another native format, large assemblies regularly break deadlines, the company cannot hire suitable people, support for a required version is ending, or the existing data management process has reached a dead end. Without such a constraint, improving the current environment and workstations is usually the sounder choice.

Start with department constraints, not features

For ten engineers, the choice must answer four questions: which assemblies actually slow down, how the customer returns changes, who you can hire in your city, and how many working hours the department will lose during a switch. The answers depend on your product range far more than on vendor demonstrations.

Build a workload profile for the past six months. Do not take the prettiest model. Take the assembly that engineers open every day and complain about most often. Record the number of unique parts, total occurrences, configurations or model states, external links, the size of the drawing package, and the duration of three operations: a cold open, a rebuild after a typical change, and PDF release with a bill of materials. Note separately whether the project runs locally, from a network folder, or through PDM.

Then describe incoming and outgoing data. A customer sending STEP only for an envelope check is one situation. A customer changing a native assembly every week while your department must update it without repositioning components is another. In the first case, neutral import quality matters more than the feature history. In the second, associative links, supported versions, and file naming rules matter.

Do not confuse CAD speed with process speed. An assembly can rotate smoothly while the engineer waits for a file to be released, searches for the correct revision, or manually fixes a bill of materials. More powerful graphics cards will not repair a weak project structure. Changing CAD will not repair it automatically either.

Large assemblies demand discipline in both systems

SolidWorks and Inventor handle large assemblies adequately when the department designs the structure and simplified representations in advance. If you fully load every component, keep dozens of in-context links, and demand an exact rebuild of every fastener after any movement, both systems will spend time doing precisely what they were instructed to do.

SolidWorks provides Lightweight, Large Assembly Settings, Large Design Review, and SpeedPak. SOLIDWORKS Design Help explains the distinction plainly: a lightweight component loads only some data into memory and retrieves the rest on demand; SpeedPak retains selected faces and reference geometry without loading the full subassembly. This helps when a machine or line sits inside a plant assembly but mates are needed only on a few mounting surfaces. SpeedPak carries a cost: after the source subassembly changes, it must be updated, and a drawing can dimension only edges included in the representation.

Inventor offers Express Mode, Design View Representations, Model States, substitute representations, and simplification through a derived part. Autodesk's official help says Express Mode initially loads cached graphics, then brings component data into memory as it is accessed. Its advantage therefore declines during a long session. Model States can keep dimensions, manufacturing stages, composition, and simplifications in one file, but the engineer must understand the edit scope. The wrong scope applies a change to the wrong state.

Do not compare empty model rotation in the test. Run the same working sequence:

1. Open the top-level assembly after restarting the workstation.
2. Find a part through the tree and change a typical parameter.
3. Rebuild the affected subassemblies and update the drawing.
4. Run interference detection in a selected area.
5. Save the package, close it, and open it again.

Record duration, peak memory, warning count, and the actions that required a change from simplified to full mode. Repeat the test in the current system and in the candidate after a specialist configures simplification correctly. Comparing default settings measures installation quality, not the limits of the system.

Count hardware together with CAD. For SolidWorks 2026, the manufacturer specifies 16 GB of memory, recommends 32 GB, and recommends an SSD plus a certified graphics card with a suitable driver. For Inventor 2026, Autodesk recommends 32 GB and, for complex assemblies that typically exceed one thousand parts, specifies 64 GB and a graphics card with 8 GB of memory. These figures do not promise a specific speed, but they show why ten old office PCs are not a neutral test platform.

A customer's native file matters more than a compatibility claim

Both systems read common neutral formats, but "the file opened" and "the project remains usable" mean different things. STEP transfers geometry and structure well with a suitable profile, but it does not carry the native feature tree in a form that engineers can continue editing without compromises. Names, properties, materials, mates, configurations, and manufacturing information can survive only partially or require a separate check.

Through AnyCAD, Inventor can attach a SolidWorks file as an associative reference or convert it into an independent model. In Reference Model mode, an engineer can pull in changes to the source without translating the file again. Autodesk also gives a direct warning: editable features, sketches, parameters, mates, and some attributes from the source system do not become native Inventor objects. This is a good link to outside context, not a magical project conversion.

SolidWorks has its own importers and 3D Interconnect for third-party CAD data. The principle is the same: an associative external model works well as supplied geometry, but it does not turn somebody else's design history into yours. If an engineer must change the customer's holes, variants, and dependencies, request the native format of the system in which the work will be done, or agree on the boundary of responsibility in advance.

Prepare a small acceptance matrix for exchange. Make the rows the transfers that actually occur: an incoming part, incoming assembly, returned modified assembly, drawing, bill of materials, and model for a machining contractor. In the columns, record the format, version, preservation of structure, attributes, colors, coordinate systems, threads, and the outcome after another update. Test the round trip, not one import.

Version differences are especially dangerous. Autodesk states that Inventor cannot save a native file in an earlier release format. AnyCAD lets the previous release reference a model from the next release after the required updates are installed, but it does not allow editing the new features. With SolidWorks, release and service pack compatibility must also be checked against the customer's exact process. A plain department rule saves deadlines: the CAD version belongs in the specification alongside the sheet format and system of units.

Test specialized operations on your own product range

A comparison of basic modeling rarely reveals a reason to choose. Sketching, extrusions, patterns, holes, mates, and drawings exist in both systems. Differences become expensive in operations the department repeats hundreds of times: sheet metal development, welded frames, piping, cable routing, product families, analysis, machine-data preparation, and documentation under company standards.

For sheet metal, use a part with real bends, cuts near a bend line, a flange, a bend allowance table, and the production team's DXF requirement. Build it from scratch, change the thickness and material, then compare the flat pattern with what the machine accepts. The command name does not matter if a process engineer must manually delete extra lines or mirror the contour every time. Check layers, marking, grain direction, internal contours, and output file naming rules.

Do not test weldments with an attractive frame made of four members. Use your profile range, joint treatments, gussets, reused units, weld symbols, and cut list. Find out whether the library owner can update a profile centrally without damaging released products. Check how the system counts identical blanks after mirroring and how it sends length to the bill of materials. An error here appears as excess metal or an assembly stop, not as an obvious screen defect.

Families and variants need a separate decision. In SolidWorks, configurations can change dimensions, component suppression, and properties. In Inventor, comparable jobs use Model States, iParts, and iAssemblies. These mechanisms have similar purposes but are not identical in file and bill-of-materials management. Do not transfer the old structure literally. First decide what your company treats as one part with variants and what needs its own designation, revision, and lifecycle.

Run a size-change test. Create three variants of an assembly, release a drawing and bill of materials for each, then change a shared component and a unique property in only one variant. After the update, check the other variants and PDM. This test quickly reveals the wrong edit scope, shared properties where separate ones were expected, and unexpected extra files. Correcting the method on three models is cheap. Correcting it on three thousand is not.

Treat drawings as a separate department product. Production needs readable views, symbols, tables, balloons, and a stable PDF, not proof that a 3D model exists. Transfer a dense sheet with sections, detail views, geometric tolerances, threads, welds, technical requirements, and a long bill of materials. Change the model so some geometric references rebuild. Count both update time and the dimensions that lose attachment or change orientation.

ESKD requirements are not complete merely because the interface is localized. A supplier may provide starter templates, but the company remains responsible for its own designations, title block rules, supplementary fields, group documents, and accepted exceptions. Put the design standards reviewer on the pilot team. That person will see errors the CAD administrator and workstation supplier will miss.

Compare built-in analysis against the task and the engineer's responsibility. A basic check of mass, center of gravity, interference, or movement can belong in daily work. Strength, fatigue, thermal, or flow analysis requires the right module, correct boundary conditions, and a qualified engineer. A Simulation button does not prove that the chosen package covers the company's method. Request the exact package matrix and run one analysis with a validated reference result.

The same applies to pipes and cables. Routing may be included in one commercial package and require a higher tier or separate product in another. The license price is only the beginning: the team must create libraries of fittings, connectors, routing rules, lengths, and designations. If the department makes two simple routes a year, a specialized module may not repay its setup cost. If every project contains hundreds of connections, manual work already costs more than the right package.

Automation often binds a company to its current CAD more strongly than part formats do. Macros, product generators, naming rules, export scripts, and ERP integration contain years of local decisions. Inventory them before choosing: identify the owner, API, inputs, outputs, and failure behavior. A macro that one department veteran runs once a month can still produce half of a standard order.

Do not transfer automation blindly. Some old macros preserve a bad process and should be retired. Choose one of four outcomes for each scenario: a native function in the new system replaces it, the scenario must be rewritten, the action temporarily remains in the old CAD, or the company abandons it. Then estimate development, testing, and support. The promise that "there is an API too" is not a migration estimate.

Finally, test the ordinary details that consume a day: finding a standard fastener, copying a project under new names, replacing references, printing a package, updating properties in a batch, and restoring a broken link. An experienced demonstrator can easily avoid these places with a prepared project. Give that person a copy of your anonymized set and ask for the tasks in the specified order without manual preparation between them.

Test reuse of purchased components separately. Suppliers send heavy models containing internal bodies, unnecessary fillets, and a feature tree the department does not control. The engineer must quickly make a simplified representation, retain connection points, and replace geometry after a catalog update. If every person cleans every import manually, ten seats multiply a small delay across the entire component flow. Set an acceptable file size, mandatory properties, and a storage location for the source.

Ask production to name four documentation defects seen during the past year, without trying to tie them to a CAD brand. These might be the wrong blank length, a missing balloon, an obsolete flat pattern, or a PDF version that does not match the model. Reproduce the cases in the pilot and check whether the system prevents the error, detects it, or only makes documentation faster. A function has use only when paired with a rule, an owner, and a clear failure signal.

Assess support with a difficult question. Prepare an anonymized case involving a lost reference, slow rebuild, or translator error and send the same precise description to both suppliers. Record the time to a substantive answer, the need for remote access, the quality of root-cause analysis, and the availability of a workaround. First-line support that repeats the manual is little help during release week. For a department without a strong administrator, the competence of the local partner can outweigh a small difference between commands in the two programs.

Do not let a demonstration replace acceptance. The supplier has every right to show the best scenario, and the department has a duty to test the worst recurring one. Put every claim about a supported format, property transfer, licensing, and version compatibility into the record with the exact release number. Six months later, participants will remember the meeting differently, while a written criterion remains testable.

After these checks, the feature set becomes concrete. The department may not care about one advanced module, yet depend on a predictable flat pattern or a group bill of materials. That basis can be defended to finance and production. A comparison by checkmark count protects only the original preference of the person who made the table.

Measure the labor market by tasks, not resumes

You cannot reliably assess engineer availability by counting software mentions in vacancies. An employer often writes "SolidWorks, Inventor, or similar" while needing somebody who can release documentation under ESKD, understands fits, weldments, and manufacturing technology. Conversely, a candidate with an impressive certificate may not know how to resolve external-reference errors in a real project.

Run your own market sample in Kazakhstan and the cities where you hire. For four weeks, collect suitable resumes and vacancy responses, then divide candidates into four groups: confident in your current system, experienced in the candidate system, experienced in both, and knowledgeable in the engineering domain but needing CAD training. Do not publish two simultaneous vacancies under different titles if that distorts candidate expectations. Asking identical questions in the initial conversation is enough.

A practical task should not take a day or imitate unpaid work. Give the candidate a small anonymized assembly, one drawing, and a change list. Ask them to replace a part, preserve dependencies, update the bill of materials, and explain where they expect an error. This measures transferable skills. An experienced designer learns interface commands faster than mechanical engineering fundamentals.

For a department of ten, knowledge concentration matters. If only one engineer can administer templates, libraries, and PDM, the system is vulnerable regardless of brand. Include training for a second administrator, setup documentation, and time for internal project reviews in the decision budget. Buying ten beginner courses without preparing an owner for standards produces ten ways to format the same drawing.

SolidWorks often appears among contractors, smaller manufacturers, and broad mechanical-model exchange in many markets. Inventor fits naturally where DWG, AutoCAD, and Autodesk Vault are already common. For a particular Kazakh department, these are only hypotheses that must be checked before each purchase. Verify them through your customers, local training programs, applications, and integrator availability. Do not project a global reputation onto local hiring.

The price of ten seats is not the cost of ownership

A commercial quote for ten licenses provides only one budget line. Compare the same functional scope, licensing method, and term. Basic part and assembly design may sit in one package, while routing, analysis, data management, standard-parts libraries, or advanced viewing for a contractor may require other tiers and products.

Licensing models also differ. Autodesk sells Inventor by subscription and offers terms that depend on the commercial quote and region. SolidWorks offers named-user options, device licenses, network use through a partner, and in some cases a perpetual license with maintenance. You cannot take a public price from another country, multiply it by ten, and call it a Kazakhstan budget. Taxes, currency, package contents, support, and partner terms will change the result.

Calculate a three-year cash flow and staff hours. A useful cost model looks like this:

TCO_3Y = licenses + maintenance + PDM/storage + servers
       + workstations + implementation + training
       + migration hours + dual licenses during transition
       + productivity loss + integration support

Write down the source and assumption for each line. Multiply hours by the fully loaded cost of working time, not salary alone. Estimate productivity loss separately for a senior engineer, a regular designer, an administrator, and the employee who releases documentation. They will learn the new environment at different speeds.

Add downtime cost. If ten people lose one hour a day for twenty working days after migration, the department gives up two hundred hours before library fixes and old-project repairs. This is not a forecast. It is a calculation example that must be replaced with your pilot data. That line often exceeds the annual difference between supplier quotes.

Do not omit exit cost. What happens to the archive if the subscription ends in three years? How will the department open an old project, release a spare part, and correct a drawing? Which version remains available, which viewers are required, and how can metadata be exported from PDM? Get the answers in writing before procurement.

Switching fails at links, not geometry

The most common migration mistake looks convincing: the department batch-converts every file, sees solid bodies, and declares success. A month later, an old product needs a change. The assembly opens, but some mates are gone, the drawing refers to different faces, item designations in the bill of materials do not match ERP, and the engineer cannot tell which of two copies is now authoritative.

Geometric accuracy answers only whether the body shape survived within a selected tolerance. Project usability answers a different question: can the team safely change the product, update dependent documents, and prove which revision went to production? These ideas are often blurred. For an archive needed only as reference geometry, a neutral format may be enough. An active product family needs native rebuilds, checked drawings, and managed links.

Classify the archive before conversion. Deeply migrate active products expected to change and inspect them manually. Rebuild or clean reusable standard units so that they become dependable library elements. Keep completed projects in their source format with a working version of the software, and make a neutral backup export in parallel. Do not migrate obsolete clutter just to report an attractive completion percentage.

For the control sample, choose different product types: sheet metal, a welded frame, a parametric family, a large assembly, a part with a complex surface, and a package with many variants. After conversion, check mass properties, geometry comparison, rebuild, component replacement, update of every drawing view, and release of the bill of materials. Inspect designations, materials, units, tolerances, threads, custom properties, and file paths.

Automatic feature recognition helps with individual parts, but it does not recover the engineer's intent. An imported cut may become an editable feature, yet the system will not know why its diameter depends on the fastener size or which variants should suppress it. For an active model, rebuilding important parameters over a checked body is often faster than repairing a long tree of recognized features.

PDM and standards matter more than the CAD interface

For ten seats, a shared folder already creates expensive errors when several people change linked assemblies. CAD does not replace revision rules, edit locking, dependency search, backups, or documentation release. A choice between SolidWorks and Inventor must include SolidWorks PDM, Autodesk Vault, or the existing data management system, even when its licenses are procured separately.

Check more than file registration. Trace one change route: a designer takes an assembly into work, changes a part, gets approval, releases a revision, sends the bill of materials to procurement, and rolls back a bad version. The system must show document state and dependencies unambiguously. If the route exists only in the lead engineer's memory, new CAD will carry that weakness into a more expensive environment.

Templates and libraries are part of migration too. You need sheet formats, title blocks, dimension styles, surface and weld symbols, materials, profiles, fasteners, numbering rules, PDF/DXF export, and ESKD compliance. Assign an owner and an acceptance test to each object. "We will configure it after launch" usually means employees will manually correct documents before release for the first few months.

Test integrations on a real data flow. If the bill of materials goes to ERP, compare codes, quantities, units, and variants. If production consumes DXF, confirm that layers, contours, and scales meet machine requirements. If a customer approves 3D without CAD, test the available viewing and markup format instead of assuming that the customer will buy the same license.

GSE.kz can select and integrate workstations and an Autodesk software environment with the server infrastructure and subsequent support in view. The final CAD decision must still pass on the department's own data. An integrator cannot replace the owner of design standards or production acceptance.

A two-seat pilot gives an answer without stopping the department

Switching all ten workstations at once is risky. A two-seat pilot tests technical and organizational assumptions while the other engineers keep releasing products in the current system. One participant should know the existing process well. The other can be a strong designer without an administrator role. This shows both setup depth and an ordinary user's experience.

Choose one completed project for reproduction and one small live change. With the completed project, you can calmly measure matching geometry, drawings, and bills of materials. The live change reveals exchange with colleagues and the customer, revision work, and real delays. Do not choose a tutorial part. It hides the dependencies for which the department buys CAD in the first place.

Set pass criteria before the pilot. For example: every mandatory format opens and returns without critical loss; the control assembly meets an agreed opening and update duration; the bill of materials matches the approved one; two engineers release the package without manual redrawing; the administrator can deploy settings repeatably; and support resolves a prepared difficult question in an acceptable way. The department sets the thresholds, not the supplier.

Keep a problem log with four fields: action, observed result, effect on release, and solution. "Inconvenient" is useless. "After importing the sheet metal part, the flat-pattern direction changed, the operator received a mirrored DXF, and a check rule is required" already affects cost and the training plan.

The pilot must include a target-class workstation and the current computer. This separates the benefit of the program from the benefit of a new processor, memory, and SSD. For an engineering fleet, agree on one system image, certified drivers, a backup configuration, and an update procedure. Otherwise ten formally identical seats become ten different environments within a year.

The decision must survive review three years later

Staying with SolidWorks makes sense when the department already releases projects quickly in it, customers exchange native files, dependable templates and PDM have accumulated, and large-assembly issues can be fixed through structure, SpeedPak, lightweight loading, and workstation upgrades. Switching for a cheaper quote rarely repays lost parameters and months of reduced pace.

Choosing Inventor makes sense when the department is closely tied to DWG and the Autodesk ecosystem, customers accept that working format, Vault or other components are already deployed, and an AnyCAD plus Express Mode pilot passes on your assemblies. The stronger argument is not a familiar ribbon but fewer conversions between the company's engineering systems.

Switching from Inventor to SolidWorks makes sense for symmetrical reasons: customer-native format has become mandatory, local hiring and support are materially easier, specialized workflows are confirmed by the pilot, and active-data migration fits within the calculated payback period. If the case amounts to the new manager's personal preference, the department gets an expensive change of keyboard shortcuts without a different result.

Put the decision on one page. State mandatory constraints, control-assembly results, exchange acceptance, engineer availability, three-year TCO, migration risks, and the owner of every risk. Alongside them, record review triggers: a new major customer, a PDM change, growing assemblies, end of version support, or a licensing-model change.

A sound decision may end with keeping the current CAD, buying memory, configuring PDM, and spending two weeks on assembly structure. That result is no less serious than a migration. For a department of ten, the best system is the one in which a proven process releases correct documentation on time and leaves an archive that can still be opened after the next management change.