Comes with the guitar
Ripple
Flowing contour lines that fade out at the edges. Included with the guitar.
IncludedWith the guitar
3D-printable T-style electric guitar body
Filamentcaster
A full guitar body you print at home on any printer with a 256 × 256 mm bed (tested on a Bambu Lab X1C), built around the Harley Benton T-style kit. Decorative guitar plates clip on with magnets and swap out in seconds.
Not sure it will fit your printer or kit? Print the free test-fit pack first →
Full-size T-style body256 × 256 mm bed4 body pieces3 magnetic guitar plates45 mm thick≈3.3 kg built
Pop a plate off with an Allen key through the back, then click on your next style.
The real thing
Printed, built and played
These are photos of my own Filamentcaster, printed on a Bambu Lab X1C and built from the Harley Benton T-style kit. Swipe for more.
Colour configurator
Pick three filaments
Body, guitar plates and pickguard each print in one colour, so there are no colour changes mid-print. Choose a preset or build your own.
Want to go wild? Every body piece and every guitar plate prints on its own, so you can give each one a different colour. Mix four body colours and three plate colours for a patchwork Filamentcaster that nobody else has.
Inside the Filamentcaster
Every part, taken apart
Scroll to pull the guitar apart and see how the printed body, magnetic plates and kit hardware fit together.
Keep scrolling
Plate designs
Swap the look in seconds
Each design is a set of three magnetic guitar plates, sized for the Filamentcaster recess with the magnet pockets in place. Single-colour sets are £3.50; two-tone sets, with raised tops in a second colour, are £4.50. Print a new set, push the old guitar plates off from the back, and clip the new ones on.
More designs on the way
New guitar plate designs are in the works. Every set fits every Filamentcaster, so your guitar keeps getting new looks.
Follow for new designsBe first to see new guitar plates
New designs are announced first on Instagram. Email updates are coming in the new year.
Follow @filamentcaster.officialTry the guitar plates
See each design on the guitar
Tap a design to see it on the body. Shown with a sage green body and bone guitar plates; for two-tone designs, pick the second colour.
Bundles
Get more for less
Complete bundle
The Filamentcaster guitar files plus every guitar plate design released so far.
- Guitar files: Bambu Studio project and STLs
- Ripple guitar plates included
- All 10 plate designs, including the four two-tone sets
£24.99£54.49Save £29.50
Add to cart
Guitar + 3 guitar plate sets
The full Filamentcaster files plus any three guitar plate designs of your choice.
- Guitar files: Bambu Studio project and STLs
- Ripple guitar plates included
- Pick any 3 guitar plate designs, including the two-tone sets
£17.99£25.49Save £7.50
Choose 3 and add to cart
All guitar plate sets
Every guitar plate design released so far, for builders who already have the guitar.
- All 10 designs: Topo, Knurl, Vinyl, Chevron, Raindrops, Truchet, Waves, Circuit, Camo and Checker
- Sized for the Filamentcaster recess and magnets
£14.99£39.50Save £24.51
Add to cart
Design
Built to be played, printed and swapped
Magnetic guitar plates
Three textured guitar plates sit in an 8 mm recess on 28 hidden 10 × 3 mm magnets. Push them off from the back through six small holes, then clip on a new design.
Fits the Harley Benton kit
Neck pocket, bolt pattern, pickup routes, control slot, bridge holes and jack are placed for the Harley Benton T-style kit. Your neck, bridge and electronics drop straight in.
Carbon-rod spine
Two 8 mm carbon rods run from under the neck pocket past the bridge, carrying string tension so the body stays straight for years.
No supports, screwed-together body
Every part prints flat with no supports. Bow-tie keys with M4 heat-set inserts and dowel pins join the four body pieces from the back, out of sight, so the body needs no glue. The only glue is a drop of superglue to fix each magnet in its pocket.
Print plan · Bambu Lab X1C
Seven digital build plates, settings included
The Bambu Studio project lays every part out across seven printer build plates and sets walls, infill and layer height per part. Open it, pick your filament, and print each build plate in turn. Sliced in Bambu Studio for a Bambu Lab X1C with PLA, the whole guitar takes about 50 hours of printing and 2 kg of filament.
| Build plate | Parts | Walls | Top / bottom | Infill | Layer | Time | Filament |
|---|---|---|---|---|---|---|---|
| 01 | Body B, bridge and controls | 6 | 7 / 7 | 20% gyroid | 0.20 mm | 19.4 h | 824 g |
| 02 | Body D, neck pocket | 6 | 7 / 7 | 20% gyroid | 0.20 mm | 13.2 h | 541 g |
| 03 | Body A + C, bass side | 4 | 5 / 5 | 15% gyroid | 0.20 mm | 8.0 h | 353 g |
| 04 | Guitar plate 1 + 8 joint keys | 3 / 6 | 6 / 4 | 15% / solid | 0.12 mm | 3.8 h | 111 g |
| 05 | Guitar plate 2 | 3 | 6 / 4 | 15% | 0.12 mm | 2.0 h | 54 g |
| 06 | Guitar plate 3 | 3 | 6 / 4 | 15% | 0.12 mm | 2.5 h | 68 g |
| 07 | Pickguard | 3 | 8 / 8 | solid | 0.16 mm | 1.5 h | 69 g |
| Total | Whole guitar | ≈ 50 h | ≈ 2.0 kg |
From printer to playing
How the prototype came together
What you get
Everything you need to print it
.3mfBambu Studio project
7 printer build plates with per-part print settings.stlPrint-ready parts
4 body pieces, 3 guitar plates, pickguard, joint key.pdfBuild guide
Parts list, print settings and step-by-step assembly.svgHeadstock decal
Filamentcaster logo for the headstock, ready for clear waterslide paper or vinyl. Prefer to print it? A 3D-printable glue-on version is included too.
You will also need
kitHarley Benton Electric Guitar Kit T-Style
Neck, bridge, pickups, electronics and tuners×28Disc magnets, 10 × 3 mm×2Carbon fibre rods, Ø8 × 278 mm×16M4 heat-set inserts, 8 mm long
Knurled brass, Ø6 × 8 mm×16M4 × 10 countersunk screws×7Steel dowel pins, 6 × 30 mm~2 kgPLA across three colours or moreglueSuperglue
To fix the 28 magnets in their pocketskitJack plate and 4 screws
Included with the kit. You drill four 2 mm pilot holes to fit itdrillDrill and bits, 2 mm upwards
For the jack plate pilot holes, and opening up any tight holes 0.5 mm at a time
What it costs to build
About £150 for a whole guitar
Here's roughly what you'll spend, from files to first strum. You don't need any special tools beyond your printer, a soldering iron for the heat-set inserts and a screwdriver.
Files£14.99
Guitar files, Ripple guitar plates, build guide and headstock decal.
Filament£30–40
About 2 kg of PLA across two or three colours.
Hardware≈ £30
Magnets, carbon rods, heat-set inserts, screws and dowel pins. Full list under What you get.
All in≈ £150–160
Plus strings if you want to change the ones in the kit.
Prices checked October 2026. Kit and filament prices change, so check before you order.
Which printers fit?
You need a 256 × 256 mm bed
The largest body piece is 246 × 240 mm, so any printer with a bed of at least 256 × 256 mm will print every part. The Bambu Studio project is set up for the X1C and works on any Bambu printer with a full-size bed. The STLs work in any slicer.
Bambu Lab printers
- YesX1, X1 Carbon and X1E
256 × 256 mm. Designed and tested on the X1C. - YesP1P and P1S
256 × 256 mm. Same project file. - YesA1
256 × 256 mm. Same project file. - NoA1 mini
180 × 180 mm is too small for the body pieces.
Other brands: if the bed is at least 256 × 256 mm, it fits. Print the free test-fit pack first to check your printer's accuracy.
Not supported yet
- Not yetLeft-handed builds
The body, neck pocket and controls are right-handed only for now. - Not yetOther guitar kits
Only the Harley Benton T-Style kit. Other necks and bridges may not line up. - Not yetSmaller beds
There's no version split for beds under 256 × 256 mm.
Want one of these? Tell us on Instagram. It helps decide what comes next.
Free download
Print the test-fit pack first
Before you buy anything, print these small pieces. They're cut straight from the real body files, so if they fit your kit and your printer, the whole guitar will too.
01Neck pocket
Check the neck heel sits snugly and the 4 bolt holes line up.02Bridge section
Check the 5 bridge screw holes and the bridge pickup route.03Control slot
Check the control plate sits flush and the pots clear the chamber.04Joint key and insert pocket
Check your heat-set inserts and the bow-tie key fit.05Magnet pockets
Check a 10 × 3 mm magnet presses in flush, in the body and in a guitar plate.
Free test-fit pack
Bambu Studio project with every piece on one printer build plate, STLs, and a short guide on what to check and how to fix a tight fit. Roughly 200 g of filament.
Download free (1 MB)No email or account needed.
Builder inspiration
Show us your Filamentcaster
Start with Ben’s own build, then make it yours. Share your finished guitar and the colours you chose through Instagram or our contact page.
Designer's build
Ben's Filamentcaster
My own prototype, printed on a Bambu Lab X1C and built from the Harley Benton T-style kit. This isn't a customer review, just the first one off the printer.
- Body
- Sage green
- Guitar plates
- Bone, Ripple (and Camo in peach)
- Pickguard
- Peach
Choose your own colours and plate designs to make a guitar that feels like yours.
Share your build
- Take a few photos of your finished guitar.
- Post them on Instagram with #Filamentcaster and tag @filamentcaster.official.
- Prefer to get in touch directly? Use our contact page and tell us about your build.
Or post it with #Filamentcaster and tag @filamentcaster.official
About the maker
Designed in the UK
The Filamentcaster is designed in the UK by Ben Robb Design.
Ben is a designer and maker, and the owner of FilamentGifts. Every part of the Filamentcaster was modelled from scratch around the Harley Benton T-style kit and a Bambu Lab X1C.
Need something designed for you? Ben Robb Design takes on custom design work.
Follow the build
@filamentcaster.official
New guitar plate designs, builds and behind-the-scenes, first on Instagram.
What's new
Updates
Improvements from building the prototype
- Straight-in channel behind the output jack so the lead plugs in cleanly, with no supports needed
- Control plate and its slot moved 4 mm towards the tail, and the pickguard trimmed 1 mm, for more clearance
- Thicker neck-pocket wall and a 45° roof on the control slot for cleaner prints
- Bigger camo patch on Camo plate 3, plus real build photos throughout the guide
The Filamentcaster is here
- Guitar files for the Harley Benton T-style kit, with the Ripple guitar plates included
- 10 guitar plate designs: Topo, Knurl, Vinyl, Chevron, Raindrops and Truchet, plus two-tone Waves, Circuit, Camo and Checker
- Free test-fit pack, printable headstock decal and build guide
File updates are free for everyone who has bought them. Follow on Instagram to hear when new guitar plates arrive.
Questions
Before you print
Which printers can print it?
Any printer with a 256 × 256 mm bed or larger, including the Bambu Lab X1, P1 and A1 (not the A1 mini), and larger machines such as the Creality K1 Max or Prusa XL. Prusa MK4 and Core One beds (250 mm wide) are just too small, so check your bed size. The largest body piece is 246 × 240 mm. See Which printers fit?
Will my Harley Benton kit fit?
The body is designed around the Harley Benton T-style kit. Kits are sometimes revised, so print the free test-fit pack first and check your neck and bridge before committing to the big parts.
Is PLA strong enough?
Yes, for a guitar kept indoors. The carbon rods carry the string load. PLA softens around 55 °C, so keep it out of hot cars, or print the two treble-side pieces in PETG or ASA.
How heavy is it?
About 3.2–3.4 kg built, which is right in the range of a typical T-style guitar.
Is it a full-size guitar?
Yes. The body is full size, made for the Harley Benton T-style kit's standard 25.5" scale neck, so it plays and sits like any regular T-style guitar.
Does it sound like a real guitar?
Yes. A solid-body electric's sound comes mostly from its pickups, strings and setup, and the Filamentcaster uses the kit's standard pickups and hardware. The carbon rods keep the body stiff between the bridge and neck. Hear it for yourself in the video at the top of the page.
Can I use a different kit or neck?
The files are designed and tested for the Harley Benton T-style kit. Other T-style (Telecaster-pattern) necks and hardware often fit, but neck heels, bolt spacing and bridge plates vary between brands. Print the matching pieces from the free test-fit pack to check before printing the body.
Can I print the two-tone guitar plates without an AMS?
Yes. The Bambu Studio project switches to filament 2 partway up, so only the raised tops print in the second colour. Without an AMS, open the Preview, delete the filament change on the layer slider, right-click the same layer and choose "Add pause". When the printer pauses, swap to your second colour and resume. Each set's README gives the exact layer height.
Can I use PETG instead of PLA?
Yes, and it's a good choice if the guitar might get warm, as PETG softens at a higher temperature. Pick your PETG profile in Bambu Studio and keep the walls and infill from the project. PETG can shrink a little differently, so print the free test-fit pack in the same PETG first and check the neck pocket and joint keys before the body.
What if the neck doesn't fit the pocket?
Print the neck pocket from the free test-fit pack first, so you find out in a couple of hours, not after the whole body. If it's slightly tight, lightly sand or scrape the pocket walls until the heel drops in. If it's loose, a strip of thin veneer or tape on one wall takes up the gap. If it's well out, send us a message with a photo and your neck heel measurements and we'll help.
Are file updates free?
Yes. If we improve the guitar files or a guitar plate set you've bought, you get the update free. Download it again from your order email.
Can I sell what I print?
The files are licensed for personal use. Print and play as many as you like for yourself; please don't share or resell the files or printed bodies.
Instant download
Get the Filamentcaster files
Bambu Studio project, STLs, the build guide and a headstock decal. One payment, yours to print.
£14.99Add to cart
Instant digital download. Download links arrive by email. Keep your order reference for future updates.
Prefer Etsy? Filamentcaster is also on Etsy, but buying here is best: you receive secure download links, with free updates and support direct from me.
Shop information
The small print, in plain English
Licence
Buying the files gives you a personal licence.
You can:
- Print as many bodies and guitar plates as you like for yourself
- Change the files for your own use
- Show off your build anywhere
You can't:
- Share, upload or resell the files, or edited versions of them
- Sell printed bodies, guitar plates or finished guitars made from the files
- Use the designs in a commercial product
You build and wire the guitar at your own risk. Filamentcaster is not affiliated with Fender, Harley Benton, Thomann or Bambu Lab.
Refunds
The files download straight after you pay. At checkout you'll be asked to agree that the download starts immediately and that you lose your 14-day right to cancel once it begins.
If a file is faulty, for example corrupt, missing a part or not as described, get in touch and we'll fix or replace it. If we can't, you'll get a refund.
Kits can change between batches, so please print the free test-fit pack before buying.
Privacy
We use your order details to process payment, deliver files and provide support. Your cart is stored on your device. Administrators use secure session cookies. Stripe processes payments; Mailgun delivers emails; AWS stores files; MongoDB stores order records. Public forms may use Google reCAPTCHA for spam protection.
Disclaimer
You use the files, print the parts and build the guitar at your own risk.
- The files are tested on a Bambu Lab X1C. Check your own printer, settings and filament before printing, and keep an eye on your prints.
- We accept no responsibility for damage to 3D printers, build plates, nozzles or other equipment, failed prints, wasted filament, or damage to the guitar kit or its parts.
- Take care with soldering irons, heat-set inserts, cutting carbon rod and guitar wiring, and follow the instructions that come with your kit and tools.
This doesn't affect your legal rights. The files must be as described and work as described in the build guide, and nothing here limits liability where the law doesn't allow it, such as for death or personal injury caused by negligence.
Contact
Questions about your order, a fit problem or a faulty file? Send me a message and I'll aim to reply within 2 working days. Please include your order number, and describe what does not fit.
About fit and print quality: every part was designed, printed and test-fitted on a Bambu Lab X1C. Results on other printers can vary with machine, filament and calibration. Print the free test-fit pack first and check your printer's dimensional accuracy before printing the full body.