Best Estimating Software for Plastics: 6 Options for 2027

Which category to buy first

Estimating software for a plastics manufacturer turns part geometry, resin, cycle time, tooling, scrap, and overhead into a quoted price you can defend on the next request. The best estimating software for plastics manufacturers depends first on which quoting job you need done, so pick the category before you compare vendors. If your quotes depend on your own press and resin data, start with an ERP or job-shop system that has a quoting module, and use a workflow layer only for intake and handoff. None of the six tools below is verified for molded-part quoting, so the next step for a molder is a DELMIAWorks quoting demo on one of your own molded parts.

Four categories show up in this market. A mold or tool cost estimator prices the tooling itself and suits toolmakers. A part-cost model prices the molded part against a press and resin and suits molders quoting parts. A quoting platform handles the request-to-quote flow for job shops and contract manufacturers. An ERP with a quoting module connects the quote to scheduling, inventory, and invoicing. Most small owners need one category covered well before they add a second.

The U.S. plastics industry employs over one million workers according to PLASTICS (2025), and vendor scope varies widely across its shop types. One generic quoting tool rarely fits every shop type, which is why category comes before vendor.

Key Takeaways

• Choose the category before the vendor: tool cost, part cost, quoting platform, or ERP with quoting.

• In this review, molding-specific scope is rare. The two tools that name molds are aimed at toolmakers and mold makers, not at molders quoting finished parts.

• None of the six options reviewed publishes a price on the pages checked, so every purchase starts with a quote request.

• Paperless Parts and MTI Costimator name specific ERP and export paths. JobBOSS² and DELMIAWorks are ERP-first, so check which path your system already uses.

• A workflow layer can extract and route intake and handoff data, but an estimator should approve resin, scrap, and tooling assumptions before a quote leaves the shop.

• Test any shortlist against several of your past jobs, comparing the tool's output with what each job actually cost.

How we evaluated these tools

This is a desk review of public vendor pages and independent sources, not a hands-on test. Where a vendor page would not open or did not state a fact, the tables say so instead of filling the gap. The weights below reflect our judgment for a small molder. A toolmaker quoting tool builds should raise the first weight.

Each option was read against these tests using public pages only. A score of 0 means the page is silent, not that the feature is absent, so the gaps in the next section are questions to ask in a demo.

Feature matrix: what the public pages say

Read the matrix as a list of what each page says, not as a score. "Not verified" means this review could not open the relevant vendor page, not that the product lacks the feature. Epicor appears only as an integration named by Paperless Parts and an export target named by MTI; this review did not open Epicor's own estimating pages.

Pricing: every option here is quote-based

None of the six options reviewed publishes a price on the pages checked, so the table records what each vendor says about cost instead.

Pricing checked October 29, 2026. Total cost of ownership therefore depends on what you ask for: license, implementation, integrations, and the rate and overhead data you must keep current. Ask every vendor for a multi-year total, and put every quote on the same list of line items so you compare like with like.

Vendor profiles

Paperless Parts

Vendor facts: Paperless Parts says it is "trusted by more than 800 custom part manufacturing businesses" according to Paperless Parts (2026). Its process list covers sheet metal fabrication, complex assemblies, CNC machining, Swiss screw machining, rubber manufacturing, and additive manufacturing, and injection molding does not appear on the pages checked. Its integration list names JobBOSS², ProShop ERP, E2 Shop System, Epicor, Global Shop Solutions, Made2Manage, Infor, NetSuite, and Fulcrum, along with QuickBooks and Sage 50 for accounting.

Onboarding: 10–12 weeks typical according to Paperless Parts (2026). That is the only typical onboarding window published by any vendor reviewed here.

Our read: Paperless Parts is the best fit for a job shop or contract manufacturer that quotes many custom parts and wants a quoting platform tied to an ERP. The limit is molding depth. Because the public process list omits injection molding, a molder should confirm in a demo that resin, cycle time, and press rates are modeled with its own parts. The vendor says its pricing reflects a minimum return-on-investment commitment, so ask what that return is measured against. This is the wrong category if almost all of your work is molded parts. Plan for the typical onboarding window and confirm which ERP access and part libraries must be ready first.

MTI Costimator

Vendor facts: MTI describes Costimator as built for machine shops, sheet metal fabricators, job shops, contract manufacturers, and procurement teams doing should-cost analysis. Costimator: over 330 pre-loaded cost models according to MTI Systems (2026). The page says those models can be customized to a shop's equipment and overhead rates, and that estimates can be made with or without a 3D CAD model. It exports estimate data as XML to Epicor, JobBoss (ECI), E2 Shop System, and ProfitKey ERP. The current page lists machining and sheet metal processes and does not mention injection molding. It also reports customer-survey gains in speed and accuracy, and it gives two different accuracy claims, so treat those as marketing.

An older trade article is less certain about molding. Design World reported in 2013 that Costimator "supports the estimating of over 300 different manufacturing processes" according to Design World (2013), and it names molding only in a list. That claim does not establish injection-molding depth.

Our read: Costimator fits machine and fabrication shops that want cost models plus an ERP export. For a molder, the disqualifier is an unverified molding model: if resin, cycle time, and press rates are not in the model, you would be paying for machining and sheet metal logic you do not use. The shop maintains the cost database, so accuracy depends on how current your rates are. Ask for a demo built on one of your molded parts before you accept the claim.

JobBOSS² from ECI

Vendor facts: ECI says JobBOSS² is "designed for your job shop operations" and lets users "Quickly access information about materials, labor, waste, overhead, and more to build and send fast accurate quotes." Accepted quotes can become production jobs without manual re-entry, according to ECI. The page names no industries and does not mention plastics or molding. Paperless Parts lists JobBOSS² as a strategic partnership, so a shop that wants quoting software on top of JobBOSS² has a documented pairing.

Our read: JobBOSS² fits a job shop that wants one system from quote to production job and can accept a generic cost model. Its quote inputs include waste and overhead, but the page does not show how resin, regrind, or press rates are handled. The disqualifier is a margin that depends on regrind and cycle time, in which case the vendor must demonstrate those inputs in your own quote. The page gives no implementation timeline, so request one with the quote.

DELMIAWorks EnterpriseIQ (formerly IQMS)

Vendor facts: The IQMS web address redirects to SOLIDWORKS' DELMIAWorks ERP page, so the product now appears under the DELMIAWorks name. ERPResearch describes it as aimed at discrete manufacturers "particularly in plastics/injection molding" and as offering "industry-specific tooling such as cavitation and family-tool management for injection molders," according to ERPResearch. This review could not open the vendor's quoting pages, so its quoting depth for molders is unverified here.

Our read: DELMIAWorks is a candidate for a molder that wants a full ERP, including quoting, and can run a longer evaluation. Because this review confirmed its molding focus only through a third-party profile and did not open its quoting pages, ask for a demo that prices a molded part with scrap or regrind, and ask for references from molders using that quoting path. The disqualifier is urgency: if you need a quote tool within weeks, a full ERP evaluation is the wrong pace. Choose it when you are replacing the whole ERP, not only the quoting step.

Cadflow QuickQuote

Vendor facts: Trade coverage describes Cadflow's QuickQuote as a CAD-independent tool that calculates time and cost "based on the 3D model of the plastic part(s)," imports STL geometry, detects negative zones, and produces preliminary mold drawings. The article says the tool "reportedly limits quotation errors" and gives no measured savings, according to Moldmaking Technology (2021). The vendor's Portuguese-language site describes the same mold cost outputs, names no pricing or license terms, and says the software ships with average material and labor costs.

Our read: QuickQuote fits a mold maker that quotes tools from 3D part models. It is a tool-cost estimator, not an ERP, and no ERP or accounting export is named. The default material and labor rates must be replaced with yours before the first quote. The name QUICKQUOTE is also used by unrelated products, so confirm which vendor you are contacting. The disqualifier is a molder quoting finished parts from its own press data.

JDL Perfect CalCard

Vendor facts: SoftwareReview describes Perfect CalCard as software that "assists in calculating the costs associated with designing and manufacturing tools, dies, molds, and fixtures," according to SoftwareReview. The same profile is unclaimed by the vendor, and it states that published pricing is not available. The JDL Technical Services website did not resolve during this review.

Our read: Perfect CalCard fits a toolmaker that needs a tool and mold cost estimator. It estimates tools, dies, molds, and fixtures rather than quoting finished parts, and no ERP path is named. Because the listing is unclaimed, confirm current features and terms directly with JDL. The disqualifier is a need to quote molded part runs, which still requires a part quote tool.

When NOT to use US Tech Automations

A simpler tool wins in three cases. If you quote a handful of molded parts a month, a spreadsheet with your own cost model may be enough, and a workflow layer adds setup you do not need. If your ERP already has a quoting module your staff uses, the bottleneck is probably scheduling or press time, and a layer on top of a working quote process will not fix it. If your main need is tool-build costing, a mold cost estimator such as QuickQuote or Perfect CalCard answers that question more directly than any workflow layer.

Where a workflow layer fits

US Tech Automations builds custom automations. Its home page describes AI agents and workflow automation and names Gmail, Google Calendar, Google Sheets, HubSpot, QuickBooks, and Stripe as connected tools. It does not name a molding estimator as a connector, so any link to your estimating tool must be confirmed before design begins. The home page describes discovery, design, build and test, and ongoing support, and says workflows are "tested before it goes live."

The two workflows below are proposed and configurable, not a description of an existing deployment or customer result.

Proposed workflow one covers intake. The trigger is a new request arriving in a shared inbox or a row added to a Google Sheets intake log. The action extracts the part name, resin callout, quantity, requested ship date, and drawing file names into a draft estimate record. The output is a draft row with missing fields flagged. The human review point is an estimator confirming the resin grade, scrap allowance, and tooling assumption before any number reaches a customer. Prerequisites are a named intake mailbox and a sheet your estimator already trusts.

Proposed workflow two covers handoff. The trigger is an estimate marked accepted in your estimating system, or its export file landing in a folder. The action creates a draft invoice in QuickBooks with the quoted customer and terms. The output is a draft invoice and a log entry. The owner approves before anything is sent. Prerequisites are QuickBooks access, a confirmed field map for customer, part, and due date, and an export your estimating tool can produce. On a failed write, the design should stop and alert a named person rather than retry blindly.

Stitching it together yourself

Many small shops start with Zapier, Make, or n8n, or with in-house scripts, and that is a fair alternative. Make's help center documents a Retry error handler that stores a failing run as an incomplete execution, and its default for a scenario with no error handling set is Rollback. Make default: 3 consecutive errors according to Make (2026), after which a scenario is disabled. Error routes do not consume operations, so handled errors are not billed.

Those tools can support run histories, retries, error branches, and audit evidence when they are configured. The buyer still has to design and own idempotency, so a retry does not create a second invoice. The buyer must also set escalation to a named person, control access, and maintain the scenario when a connected system changes.

A US Tech Automations design could configure the same escalation and approval points, with a named owner for failed writes and a review step before any quote or invoice leaves the shop. It would still need the prerequisites listed above, and the buyer would still own the result.

Worked example: estimator hours in a month

Take a hypothetical shop with three estimators who receive 40 requests a month and spend 2.5 hours on each, so the team spends 40 × 2.5 = 100 hours a month on estimating. Assume, as a figure to test rather than a measured result, that intake extraction and a first draft remove 30 percent of that time: 100 × 0.30 = 30 hours a month, or 30 ÷ 3 = 10 hours per estimator. If deposits are billed through Stripe, its invoice.paid event is the trigger that would let a log entry mark the job as paid.

Replace each assumption with your own counts before you decide. If the saving does not hold up on your past jobs, the intake layer is not worth building.

Who this is for

This guide fits an owner or operations lead at a small molder, toolmaker, or job shop who is close to choosing and has some job-cost history to test against. It is less useful if you have no quotes on file to compare.

Red flags: you have no past job costs to check the tool's output against, you expect the software to set resin, scrap, or press rates without your input, or you want a fixed price before any demo.

Common mistakes

• Buying on a roundup's rating without opening the vendor page that should name your process.

• Ignoring the export path, then retyping accepted quotes into the ERP by hand.

• Comparing vendors by line item when the totals and included modules differ.

• Accepting a demo built on the vendor's sample part instead of one of your own.

• Letting an automation send a quote or invoice without a named person approving it.

Decision checklist

• Choose one category: mold or tool cost, part cost, quoting platform, or ERP with quoting.
• Confirm the vendor page names your process: resin, cycle time, scrap, regrind, or tooling.
• Name the export or ERP path and the person who owns the field mapping.
• Request an itemized quote covering license, onboarding, and integrations.
• Ask for a demo that prices one of your past jobs and compare the output with actual cost.
• Write down the human review point for each quote and each invoice.

Frequently asked questions

Is there one best estimating software for plastics manufacturers?

No single product on the pages reviewed covers both mold-cost modeling and ERP quoting, so the best choice depends on which job you need done first.

Which of these vendors publishes prices?

None of the six options reviewed publishes a price on the pages checked, so every option here is quote-based.

Do I need molding-specific cost logic?

Yes, if resin, scrap, and cycle time drive your margin, so confirm the tool models them before you buy.

Can a workflow layer replace my estimator?

No. A workflow can extract and route intake and handoff data, but an estimator should approve resin, scrap, and tooling assumptions before a quote goes out.

How long does implementation take?

Paperless Parts is the only vendor reviewed here that publishes a typical onboarding window, which its profile above gives; the other vendors published no timeline on the pages checked.

Should I build this in Make or Zapier instead?

Build it yourself only if you can own error handling, idempotency, access controls, and maintenance, because these tools support retries and incomplete executions but the design stays with you.

Next steps for the shortlist

Choose the category first, then ask a few vendors for a quote built on the same past job so the totals compare. Check the export path before any demo, and confirm who owns each review point. If you want to see how a workflow layer would sit beside one of these tools, see how US Tech Automations configures this, with approval points before anything reaches a customer.