3D Design & Prototyping
Trailer Fabrication
Services Available
Custom Metal Projects
Professional SolidWorks design, production drafting, fabrication and trailer manufacturing — with 20+ years of engineering experience behind every project.
📐
Full Drawing Packet Available
Production drawings, DXF files & full model assembly — ready to build.
20+
Years Design Experience
12
Years Trailer Engineering
DXF
Cut-Ready File Delivery
2
Prototypes In Development
MultiTilt Prototype BuildSolidWorks DesignProduction DrawingsCustom Metal FabricationTrailer Engineering SupportMultiTilt Prototype BuildSolidWorks DesignProduction DrawingsCustom Metal FabricationTrailer Engineering SupportMultiTilt Prototype BuildSolidWorks DesignProduction DrawingsCustom Metal FabricationTrailer Engineering Support
Let's Build Your Vision Together.
What We Do
Design & Fabrication Services
From concept to cut-ready files — SolidWorks modeling, full production drafting, trailer engineering, and prototype development. Built around what your shop needs to get it done right.
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Full SolidWorks Design & Modeling
Complete 3D part and assembly modeling from scratch. Parametric, clean, and built to your exact specifications — ready for drawings, DXF, or prototype development.
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Production Drawings & Drafting
Detailed 2D drawings with GD&T callouts, weld symbols, full BOM, and every dimension your shop needs. No guesswork. No back-and-forth.
Trailer Design & Engineering Support
Twelve years of dedicated trailer engineering — tongue geometry, axle placement, load distribution, and build-ready documentation for manufacturers and custom builders.
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Prototype Development
From first sketch to first build. Design iteration, fabrication support, and everything in between — one point of contact the whole way through.
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DXF & PDF File Packages
Laser-cut ready DXF files and production PDFs delivered in the exact format your vendor or shop requires.
Custom Metal Projects
One-off brackets, shop fixtures, repair parts, and custom builds fabricated to fit the job instead of forcing an off-the-shelf answer.
NATM Guidelines Compliance Support
Design review, documentation, and labeling guidance built around current NATM guidelines — so your trailer build lines up with industry compliance expectations before it ever hits the road.
Trailer Fabrication
7 Line isn't just a design shop — we're actively fabricating and building prototype trailers set to change the market. Our MultiTilt and MultiDeckover Dump are multi-purpose builds engineered and welded in-house, designed for homeowners, outdoor enthusiasts, and everyday families — from motorcycles and kayaks to lawn equipment and camping gear. One trailer built right for every adventure.
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Mobile Service Available — We come to your shop, job site, or facility. No need to ship files or materials back and forth.
Available Now
Take the fire with you.
Meet the Go Grill, Go Pit, and Go Feeder — three portable outdoor products designed around easy carrying, straightforward assembly, and quick disassembly when it is time to pack up.
Go Grill — $325Go Pit — $350Go Feeder — $425
Product Preview
About
7 Line Design & Fabrication
Michael & Christy Keim founded 7 Line Design and Fabrication in Powderly, Texas — bringing over two decades of professional design and drafting experience to manufacturers, fabricators, trailer builders, and entrepreneurs who need things done right the first time.
With 12 years of dedicated trailer engineering experience, Michael understands every stage of the process — from first concept through build-ready documentation.
7 Line offers fully mobile design and fabrication services — we come to your shop or facility, eliminating friction and getting projects moving faster.
20+
Years professional design and drafting experience
12
Years specializing in trailer engineering
In Development
Prototypes
One Trailer.
Multiple Configurations.
Model 01 — MultiTilt
MultiTilt
A versatile single-axle utility trailer with a 10° tilt deck — engineered to haul motorcycles, ATVs, lawn equipment, kayaks, camping gear, and home project loads. One trailer for every chapter of life.
Model 02 — MultiDeckover Dump
MultiDeckover Dump
Deckover versatility meets dump functionality. Built for homeowners, farmers, and everyday haulers who need a platform that handles dirt, gravel, mulch, rock, and debris — engineered and fabricated in-house by 7 Line.
Contact
Start Your Project
Call or send a message — we respond fast and we won't waste your time.
Portable outdoor products built to travel, set up without tools, and break down without becoming another bulky piece of gear.
Built for the places you actually go.
The Go Series brings 7 Line’s practical design approach beyond the shop and onto the road. The Go Grill, Go Pit, and Go Feeder are built for people who want dependable outdoor gear that is easy to carry, requires no tools to assemble, and is easy to disassemble for storage or transport.
Available
Go Series 01
Go Grill
$325.00Includes custom badge / logo. Plus shipping.
A portable grilling platform designed to make cooking away from home more convenient. Carry it to camp, the tailgate, or the backyard, assemble it for use, then break it down for easier transport and storage.
Easy CarryDesigned with travel and transport in mind.
No Tools RequiredAssembles at your destination without extra tools.
Quick Pack-UpDisassembles for easier storage after use.
Custom Name or LogoPersonalize it with your name, logo, or custom branding.
Available
Go Series 02
Go Pit
$350.00Includes custom badge / logo. Plus shipping.
A portable fire pit concept for bringing a contained gathering point to camp, the patio, or wherever the day ends. The design focuses on convenient carrying and a structure that can be assembled and disassembled as needed.
Portable FormPlanned around easier movement from place to place.
No Tools RequiredAssembles for outdoor use without extra tools.
Easy DisassemblyBreaks down when the fire is out and the trip is done.
Custom Name or LogoPersonalize it with your name, logo, or custom branding.
Available
Go Series 03
Go Feeder
$425.00Plus shipping.
A mineral and corn feeder with easy assembly and disassembly — no tools required. Set it up where you need it, then break it down and store it easily for the off season.
Mineral or CornHandles mineral or corn in the same open trough.
No Tools RequiredGoes together and comes apart without any tools.
Easy Off-Season StorageBreaks down flat so it stores easily between seasons.
Covered TroughRoof panel helps keep feed shielded from the weather.
Available now.
Pricing is set and all three Go Series products are available. Reach out to order or ask questions.
7 Line Design & Fabrication
Our Trailers
Three models designed and engineered in-house — built for versatility, priced for real people, and made to outlast the alternatives.
One trailer for every chapter of life. Haul motorcycles Saturday, load kayaks Sunday, move lawn equipment Monday, head to the campsite next weekend. Engineered for the everyday person who refuses to buy three trailers when one built right will do — quiet towing, smart tie-downs, and a 10° tilt deck that loads without a ramp.
Specifications
Axle3,500 lb
Coupler2" Ball
Tilt Angle10°
Est. GVWR2,990 lb
Included Features
10° Tilt Deck
Rails Standard
Removable Jack
Removable Coupler
Toolbox
Model 02
MultiDeckover Dump
Research & Development
Deckover versatility meets dump functionality. Designed for homeowners, farmers, and everyday haulers who need a platform that handles dirt, gravel, mulch, rock, and debris — without compromise. Full removable accessory system keeps it flexible across every job around the home and property.
Specifications
Axle3,500 lb
Coupler2" Ball
Est. GVWR2,990 lb
Included Features
Removable Dump Sides
Removable Dump Doors
Converts to Full Deckover
Removable Jack
Removable Coupler
Model 03
Aerotilt
Coming Soon — Under Design
Aerotilt
On the drawing board — renderings coming soon
Our next tilt-deck platform, currently in design at the 7 Line shop in Powderly, Texas. Specifications, renderings, and build details will be published here as the design is finalized.
Specifications
StatusUnder Design
AvailabilityComing Soon
Have a Custom Build in Mind?
We design and engineer trailers from the ground up. Bring us your idea and we'll make it build-ready.
Follow our journey from raw steel to road-ready. The MultiTilt is being designed, fabricated, and built right here in Powderly, Texas — by hand, with purpose.
Build Footage
Watch It Come Together
Raw shop footage of the MultiTilt prototype being built — frame fabrication, chassis assembly, and tilt system installation. This is the real thing.
Available
