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Instant Compliance Checks for Engineering Drawings
Fit
Form
Function
Fabrication
Fit
Form
Function
Fabrication
Fit
Form
Function
Fabrication
Backed by Y Combinator
F4 is an industrial hardware design validation platform
Focused on standard engineering drawing compliance & interpretations
Founded June 2025
25 mm
25 mm
25 mm
25 mm
210 mm
Drag & Drop Files Get Instant Results
Drag & Drop Files Get Instant Results
SOC2 Secured
SOC2 Secured
F4 provides instant standard engineering drawing compliance. If a drawing is not compliant, F4 provides drawing corrections. With a compliant drawing, F4 generates end-to-end drawing interpretations for standard definitions, inspection plan, and tolerance analysis application.
F4 provides instant standard engineering drawing compliance. If a drawing is not compliant, F4 provides drawing corrections. With a compliant drawing, F4 generates end-to-end drawing interpretations for standard definitions, inspection plan, and tolerance analysis application.
Drawing Standard Compliance
Instant drawing compliance check to desired standard (ASME Y14.5 - 1994, 2009, 2018)
Drawing Correction
Suggests corrections to drawing errors to desired standard (ASME Y14.5 - 1994, 2009, 2018)
Drawing Interpretations
Provides truth-grounded interpretations for standard definitions, inspection plan, and tolerance analysis application
3a. Interpret Definitions
3b. Interpret Inspection Plan
3c. Interpret Tolerance Analysis Application
Mechanical Interface
Tracking & Documentation
Creates status and data visibility for all mechanical interfaces of an assembly
Drawing Standard Compliance
Instant drawing compliance check to desired standard (ASME Y14.5 - 1994, 2009, 2018)
Drawing Correction
Suggests corrections to drawing errors to desired standard (ASME Y14.5 - 1994, 2009, 2018)
Drawing Interpretations
Provides truth-grounded interpretations for standard definitions, inspection plan, and tolerance analysis application
3a. Interpret Definitions
3b. Interpret Inspection Plan
3c. Interpret Tolerance Analysis Application
Mechanical Interface
Tracking & Documentation
Creates status and data visibility for all mechanical interfaces of an assembly
X=7261618, Y=19821.019
X=7261618, Y=19821.019
X=7261618, Y=19821.019
X=7261618, Y=19821.019
X=7261618, Y=19821.019
X=7261618
X=7261618
X=7261618
X=7261618, Y=19821.019
X=7261618, Y=19821.019
X=7261618, Y=19821.019
X=7261618
X=7261618
X=7261618
X=7261618, Y=19821.019
X=7261618, Y=19821.019
X=7261618, Y=19821.019
X=7261618, Y=19821.019
X=7261618, Y=19821.019
X=7261618
X=7261618, Y=19821.019
X=7261618
X=7261618, Y=19821.019
Drop it. Done.
Drag and drop DXF and STEP files. F4 handles the rest.
BUILT BY ENGINEERS WITH EXPERIENCE FROM
Features
Features
A
FEATURE LIST
SET A.917372,w892
Instant Engineering Drawing Compliance Check & Corrections
F4 provides instant compliance checks and corrections based on desired GD&T drawing standard ASME Y14.5 - 1994, 2009, 2018
B
FEATURE LIST
SET A.917372,w892
Instant Engineering Drawing End-to-End Interpretations
F4 gives GD&T drawing interpretations for definitions, inspection plan, and tolerance analysis.
C
FEATURE LIST
SET A.917372,w892
Track
&
Document
Mechanical Interfaces at Scale
F4 increases status & data visibility on interfaces for mechanical assemblies
25 mm
25 mm
25 mm
25 mm
210 mm
Avoid costly scrap, rework, & wasted time with all stakeholders aligned on F4
Avoid costly scrap, rework, & wasted time with all stakeholders aligned on F4
SOC2 Secured
SOC2 Secured
SOC2 Secured
SOC2 Secured
Compliant Drawings
F4 helps you catch and fix drawing compliance issues instantly, so your team doesn’t waste time on back-and-forth reviews or supplier confusion. Clean, standard-compliant drawings reduce the risk of scrap and rework by making expectations clear from the start.
1
Compliant Drawings
Standard Definitions
F4 automatically interprets all GD&T symbols, datums, and notes based on the correct standards - no more second-guessing or misreading intent. Everyone from design to manufacturing sees the same definition, keeping teams aligned and avoiding costly miscommunication.
2
Standard Definitions
Inspection Plan
F4 generates a complete inspection plan straight from the drawing, so quality teams know exactly what to measure, how, and where. This eliminates manual setup, reduces delays during first article inspection, and helps catch issues before they reach production.
3
Inspection Plan
Tolerance Analysis Guidance
F4 gives engineers everything they need from the drawing to set up a reliable tolerance analysis, including the critical stack-up paths, applicable features, and rule exceptions. By making it easy to bridge engineering drawings to tolerance analysis, teams can catch potential fit or function issues early - before parts are fabricated and assembled.
4
Tolerance Analysis Guidance
Compliant Drawings
F4 helps you catch and fix drawing compliance issues instantly, so your team doesn’t waste time on back-and-forth reviews or supplier confusion. Clean, standard-compliant drawings reduce the risk of scrap and rework by making expectations clear from the start.
1
Compliant Drawings
Standard Definitions
F4 automatically interprets all GD&T symbols, datums, and notes based on the correct standards - no more second-guessing or misreading intent. Everyone from design to manufacturing sees the same definition, keeping teams aligned and avoiding costly miscommunication.
2
Standard Definitions
Inspection Plan
F4 generates a complete inspection plan straight from the drawing, so quality teams know exactly what to measure, how, and where. This eliminates manual setup, reduces delays during first article inspection, and helps catch issues before they reach production.
3
Inspection Plan
Tolerance Analysis Guidance
F4 gives engineers everything they need from the drawing to set up a reliable tolerance analysis, including the critical stack-up paths, applicable features, and rule exceptions. By making it easy to bridge engineering drawings to tolerance analysis, teams can catch potential fit or function issues early - before parts are fabricated and assembled.
4
Tolerance Analysis Guidance
Compliant Drawings
F4 helps you catch and fix drawing compliance issues instantly, so your team doesn’t waste time on back-and-forth reviews or supplier confusion. Clean, standard-compliant drawings reduce the risk of scrap and rework by making expectations clear from the start.
1
Compliant Drawings
Standard Definitions
F4 automatically interprets all GD&T symbols, datums, and notes based on the correct standards - no more second-guessing or misreading intent. Everyone from design to manufacturing sees the same definition, keeping teams aligned and avoiding costly miscommunication.
2
Standard Definitions
Inspection Plan
F4 generates a complete inspection plan straight from the drawing, so quality teams know exactly what to measure, how, and where. This eliminates manual setup, reduces delays during first article inspection, and helps catch issues before they reach production.
3
Inspection Plan
Tolerance Analysis Guidance
F4 gives engineers everything they need from the drawing to set up a reliable tolerance analysis, including the critical stack-up paths, applicable features, and rule exceptions. By making it easy to bridge engineering drawings to tolerance analysis, teams can catch potential fit or function issues early - before parts are fabricated and assembled.
4
Tolerance Analysis Guidance
Compliant Drawings
F4 helps you catch and fix drawing compliance issues instantly, so your team doesn’t waste time on back-and-forth reviews or supplier confusion. Clean, standard-compliant drawings reduce the risk of scrap and rework by making expectations clear from the start.
1
Compliant Drawings
Standard Definitions
F4 automatically interprets all GD&T symbols, datums, and notes based on the correct standards - no more second-guessing or misreading intent. Everyone from design to manufacturing sees the same definition, keeping teams aligned and avoiding costly miscommunication.
2
Standard Definitions
Inspection Plan
F4 generates a complete inspection plan straight from the drawing, so quality teams know exactly what to measure, how, and where. This eliminates manual setup, reduces delays during first article inspection, and helps catch issues before they reach production.
3
Inspection Plan
Tolerance Analysis Guidance
F4 gives engineers everything they need from the drawing to set up a reliable tolerance analysis, including the critical stack-up paths, applicable features, and rule exceptions. By making it easy to bridge engineering drawings to tolerance analysis, teams can catch potential fit or function issues early - before parts are fabricated and assembled.
4
Tolerance Analysis Guidance
FAQ
FAQ
Is F4 a CAD or PLM?
Neither! F4 is a hardware design validation platform that uses 3D and 2D design files generated from CAD platforms as inputs. F4 accepts files from major CAD platforms: NX, CATIA, SolidWorks, CREO, Fusion 360, & Onshape. F4 itself does not create design files. Teams also use F4 to document relevant data and status for assembly parts and interfaces instead of spreadsheets. Teams use F4 to supplement the design release process before changing part & assembly maturity in their PLM.
Who should use F4 & why?
Any industrial team that creates or works with engineering drawings should use F4! Industrial teams use F4 to avoid the risk of engineers creating and releasing non-compliant drawings. Using F4 also avoids the risk of non-design stakeholders like manufacturers, vendors, and internal teams of misinterpreting drawings. Industrial teams use F4 to get all stakeholders aligned to avoid costly scrap, rework, and wasted time.
What about defense & aerospace use?
F4 Industries is actively pursuing ITAR registration and compliance to allow defense and aerospace teams to use F4. We will update all interested teams once ITAR registration and compliance status are obtained. In the meantime, we can conduct demos to showcase F4’s capabilities for defense and aerospace teams.
How about data security & compliance?
F4 Industries is committed to the highest standards of data protection and intellectual property security. We are actively working toward the following for F4: SOC 2 Type I (estimated completion: Aug 2025); SOC 2 Type II (estimated completion: Nov 2025); ITAR Registration (estimated completion: Aug 2025)
Is F4 a CAD or PLM?
Neither! F4 is a hardware design validation platform that uses 3D and 2D design files generated from CAD platforms as inputs. F4 accepts files from major CAD platforms: NX, CATIA, SolidWorks, CREO, Fusion 360, & Onshape. F4 itself does not create design files. Teams also use F4 to document relevant data and status for assembly parts and interfaces instead of spreadsheets. Teams use F4 to supplement the design release process before changing part & assembly maturity in their PLM.
Who should use F4 & why?
Any industrial team that creates or works with engineering drawings should use F4! Industrial teams use F4 to avoid the risk of engineers creating and releasing non-compliant drawings. Using F4 also avoids the risk of non-design stakeholders like manufacturers, vendors, and internal teams of misinterpreting drawings. Industrial teams use F4 to get all stakeholders aligned to avoid costly scrap, rework, and wasted time.
What about defense & aerospace use?
F4 Industries is actively pursuing ITAR registration and compliance to allow defense and aerospace teams to use F4. We will update all interested teams once ITAR registration and compliance status are obtained. In the meantime, we can conduct demos to showcase F4’s capabilities for defense and aerospace teams.
How about data security & compliance?
F4 Industries is committed to the highest standards of data protection and intellectual property security. We are actively working toward the following for F4: SOC 2 Type I (estimated completion: Aug 2025); SOC 2 Type II (estimated completion: Nov 2025); ITAR Registration (estimated completion: Aug 2025)
Is F4 a CAD or PLM?
Neither! F4 is a hardware design validation platform that uses 3D and 2D design files generated from CAD platforms as inputs. F4 accepts files from major CAD platforms: NX, CATIA, SolidWorks, CREO, Fusion 360, & Onshape. F4 itself does not create design files. Teams also use F4 to document relevant data and status for assembly parts and interfaces instead of spreadsheets. Teams use F4 to supplement the design release process before changing part & assembly maturity in their PLM.
Who should use F4 & why?
Any industrial team that creates or works with engineering drawings should use F4! Industrial teams use F4 to avoid the risk of engineers creating and releasing non-compliant drawings. Using F4 also avoids the risk of non-design stakeholders like manufacturers, vendors, and internal teams of misinterpreting drawings. Industrial teams use F4 to get all stakeholders aligned to avoid costly scrap, rework, and wasted time.
What about defense & aerospace use?
F4 Industries is actively pursuing ITAR registration and compliance to allow defense and aerospace teams to use F4. We will update all interested teams once ITAR registration and compliance status are obtained. In the meantime, we can conduct demos to showcase F4’s capabilities for defense and aerospace teams.
How about data security & compliance?
F4 Industries is committed to the highest standards of data protection and intellectual property security. We are actively working toward the following for F4: SOC 2 Type I (estimated completion: Aug 2025); SOC 2 Type II (estimated completion: Nov 2025); ITAR Registration (estimated completion: Aug 2025)
Is F4 a CAD or PLM?
Neither! F4 is a hardware design validation platform that uses 3D and 2D design files generated from CAD platforms as inputs. F4 accepts files from major CAD platforms: NX, CATIA, SolidWorks, CREO, Fusion 360, & Onshape. F4 itself does not create design files. Teams also use F4 to document relevant data and status for assembly parts and interfaces instead of spreadsheets. Teams use F4 to supplement the design release process before changing part & assembly maturity in their PLM.
Who should use F4 & why?
Any industrial team that creates or works with engineering drawings should use F4! Industrial teams use F4 to avoid the risk of engineers creating and releasing non-compliant drawings. Using F4 also avoids the risk of non-design stakeholders like manufacturers, vendors, and internal teams of misinterpreting drawings. Industrial teams use F4 to get all stakeholders aligned to avoid costly scrap, rework, and wasted time.
What about defense & aerospace use?
F4 Industries is actively pursuing ITAR registration and compliance to allow defense and aerospace teams to use F4. We will update all interested teams once ITAR registration and compliance status are obtained. In the meantime, we can conduct demos to showcase F4’s capabilities for defense and aerospace teams.
How about data security & compliance?
F4 Industries is committed to the highest standards of data protection and intellectual property security. We are actively working toward the following for F4: SOC 2 Type I (estimated completion: Aug 2025); SOC 2 Type II (estimated completion: Nov 2025); ITAR Registration (estimated completion: Aug 2025)
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