iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
To make a 3D-printed accessory fit a guitar controller, identify the exact controller model and revision, measure it from a consistent reference point, and record every surface, opening, control, and moving part the accessory touches or must clear. Build the CAD model from those measurements, then test the tightest fit with a small print before making the full part. Do not rely on dimensions from a different controller: even guitar-shaped devices can have very different sizes and interfaces.
Why do I need to measure the exact guitar controller?
The model and revision determine whether an accessory fits. A controller’s overall length and width are only a starting point: the fit also depends on shell thickness, recessed and raised features, mounting holes, control travel, connectors, battery access, and strap hardware. A part that matches the outside outline can still block a button, foul a moving control, or prevent a battery cover from opening.
Published dimensions illustrate why one model’s measurements cannot stand in for another’s. Roland lists its GK-3 controller as 87.0 mm wide × 73.6 mm deep × 22.7 mm high in its GK-3 dimensions page. By contrast, an NBCP manual gives 16.93 × 12.99 × 2.56 inches and 3.03 pounds for a wireless PC/PS3 guitar controller (manual). These are model-specific examples, not a set of interchangeable guitar-controller dimensions.
The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Even a button that looks like a familiar size should be measured. Adafruit’s enclosure tutorial advises: “If your buttons are different than the listed Adafruit buttons, you will need to measure the size of your buttons. Use a caliper and measure the diameter.” The same principle applies to other critical interfaces: measure the controller you intend to fit, rather than estimating from appearance or copying another design’s dimensions.
#1 Best Overall
- Valued Carpenter Pencil Set: You will get 2 pcs solid carpenter pencils with 26 piece 2.8 mm refills, 1 replaceable sharpener, 1 plastic storage box.The complete carpenter pencils combination allows you to finish your work faster and more easily
- Deep Hole Marker Pencil: The deep-hole construction pencils adopts 45mm elongated tip design, which is more convenient to mark in the small hole or in other tight areas that other carpenter markers cannot reach
- Carpenter Pencils with Sharpener: The sharpener is screwed into the top of the work pencil, which won't get lost either. Built-in pencil sharpener that keep the lead with pointed and smooth to Improves line of sight in fine work
- Stronger Solid Lead: This work pencil is matched with a 2.8 mm thick lead , which is much thicker and stronger during the drawing process of construction work, it will not break or damage easily
- Marks on Various Surfaces: 3 colors solid construction pencil can marks on various surfaces,such as metal, plastic, wood, paper etc. Ideals for woodworkers, contractors, craftsmen, builders, merchants and masons
What should I record before taking measurements?
Start by identifying the specific unit and documenting its condition. A short record prevents dimensions from being separated from the model, revision, or configuration they describe.
- Identity: manufacturer, model, revision if shown, and connection type.
- Configuration: whether the neck or headstock is attached, and which removable parts are in place.
- Reference photos: photograph the identification label and the top, side, and underside. Keep the photos with the measurement sheet and CAD file.
- Measurement units: use millimetres throughout the worksheet and CAD model to avoid mixing units.
- Measurement reference: choose a flat face that can be identified again, and write down which face it is.
Do not assume that a familiar product name guarantees identical dimensions. Record the identifying information for the actual controller on your bench; if you later make another version, keep its measurements separately rather than silently overwriting the first set.
How do I establish a measurement datum?
A datum is the fixed reference from which you locate other features. Choose one flat, stable face, then define three directions: X left to right, Y front to back, and Z height. Use the same origin and axes for every coordinate in the worksheet and CAD file.
Recommended Free Tools
For example, you might choose a corner of a flat body surface as the origin and measure hole centers from that point. The exact origin is less important than making it unambiguous and repeatable. Note the chosen face, origin, and axis directions in both places. Without that record, a measurement such as “hole center: 24 mm” is incomplete because it does not say where the distance starts or which direction it follows.
Keep the controller in a stable orientation while measuring. If a measurement has to be taken from a different side, relate it to the same datum system rather than inventing a new origin midway through the worksheet.
Rank #2
- Ergonomically Designed: Work in tight areas with a compact design that gets into tough spots
- Both tools are designed to fit into difficult to reach spaces
- Complete a wide range of applications with a high-performance motor that delivers up to 300 UWO, and an impact driver delivering up to 1,400 in-lbs of torque
- Both the DEWALT impact driver and drill driver feature integrated LED work lights with a convenient 20-second delay, ensuring enhanced visibility in dimly lit or challenging work areas
- One-Handed Loading - Keep one hand free with a 1/4 in. hex chuck that accepts 1 in. bit tips
Which dimensions and interfaces must I measure?
Measure the overall envelope, then work through every controller feature that the accessory will touch, pass over, fasten to, or leave accessible. A caliper is useful for small critical features; record the location and purpose of each measurement as well as its value.
Overall envelope and contact surfaces
- Record the controller’s overall length, width, and maximum height.
- If the neck or headstock detaches, measure it separately and note whether it was attached for the overall measurement.
- At each accessory contact surface, record its position and the minimum and maximum shell thickness. A surface can vary, so do not assume one thickness represents the entire contact area.
- Measure the faces on which the accessory will sit or register. Note any slope, lip, recess, or other geometry that changes how it seats.
Controls and openings
- Measure buttons, frets, the strum bar, and the whammy bar wherever the accessory passes near or around them.
- For circular features, record the diameter and center-to-center spacing. Include the center locations in your datum coordinates when the accessory must align with them.
- Record recess, boss, and lip depths. Note whether the caliper jaw can reach the true bottom of a recess; if it cannot, do not record a shallow reading as the feature’s full depth.
- Measure screw-hole diameter, counterbore or countersink diameter, and hole depth. Record each hole’s center coordinates from the selected datum.
- Record the size and location of openings needed for connectors, cables, the power switch, battery cover, and strap hardware.
- For every moving control that needs to remain usable, determine its travel and the space it occupies through that movement—not just its resting position.
Repeat critical readings
Take at least two readings for each feature that controls the fit. If they disagree, re-zero the caliper and measure again. For an opening that must pass over the controller, retain the larger measured diameter in the worksheet rather than relying on the smaller reading. Record uncertain measurements explicitly, including any limitation such as a jaw that could not reach the bottom of a recess.
Quick wins for a faster PC:
Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →These readings are the geometry the CAD model needs. Keep measurements tied to named features—for example, “battery-cover opening width” or “left mounting-hole center from datum”—so that a later revision can be identified and changed without guessing what a number meant.
Can I open or disassemble the controller to measure hidden features?
Do not infer hidden geometry from an exterior measurement, but do not treat teardown as part of this basic workflow either. Remove only user-serviceable covers when the product documentation permits it; whether further disassembly is appropriate depends on the specific controller.
The cited Rock Band guide shows a neck attached to the body, a separate battery panel, and movable strap hardware, and cautions users not to modify, disassemble, or open the controller (guide). For that controller, preserve access to the neck joint and battery panel and do not open the unit to obtain hidden measurements. Apply the same caution to other models by checking their own documentation rather than assuming the same rules apply.
Rank #3
- 【Great Compatibility】This Katerk 1/4 inch hex shank bit holder is specifically designed for 1/4 inch hex shank drill bits. It's compatible with most 1/4 fast hex handles, hex sockets, various electric screwdrivers, and handheld screwdrivers. The bit holder makes it a valuable addition for any handyman.
- 【Secure and Safe】Built with a secure backup nut design, each drill bit holder securely locks onto your bits, ensuring they stay firmly in place. Additionally, our bit holder incorporates a high-quality steel ball rolling design that holds up to several kilograms of weight, ensuring your various drill bits don't fall off.
- 【Easy One-Handed Operation】The bit holder for impact driver allows you to change bits single-handedly, simplifying your workflow. Its multi-color design further allows for quick identification of the drill bit you need.
- 【Compact and Convenient】Thanks to its compact size, this 1/4 inch bit holder is easy to carry around. The bit holder allows for easy attachment to various tools, making this a convenient addition to your construction accessories. The Katerk bit holder is cast from high-quality alloy material, promising a long product lifespan. Despite its rugged strength, the bit holder remains lightweight, making it portable.
- 【Cool Christmas Gift For Men Stocking Stuffers】 This screwdriver bit holder, driver bit holder, impact bit holder, can be given as a gift to your loved one, especially for anyone involved in construction or electrical work. It's a must-have for stocking stuffers for men and women, tools gifts for dad, tech gadgets for men, gifts for dad, gifts for him, gifts for husband, gifts for boyfriend, cool gadgets for men, and cool gifts for dad.
How do I turn the measurements into a CAD model?
First model enough of the controller to describe the accessory’s fit: its outer envelope, mounting faces, holes, controls, and keep-out areas. Then design the accessory around that reference geometry, subtracting measured openings where the controller, a control, a fastener, or a service area must pass through or remain clear.
- Create the reference model. Use the datum measurements to represent the outer envelope and the features that matter to the accessory. Include control positions and keep-out volumes for parts that move or need access.
- Add the accessory geometry. Build its intended wall thickness, contact faces, and fastening features around the reference model. Use the measured contact surfaces rather than the overall outline alone.
- Make openings subtractive. In Adafruit’s Tinkercad workflow, measured values are entered using the Ruler tool; cutting solids are changed to Hole, grouped to subtract them, and the result is exported for printing (enclosure workflow). The same underlying idea applies in other CAD tools: model the material to remove as subtractive geometry.
- Keep measurements editable. Maintain a parameter table for measured values so that a later controller revision can be accommodated by updating dimensions rather than remodeling the entire part.
- Use lead-ins selectively. A small lead-in or chamfer may help where the accessory meets the controller, but do not add one where it would reduce retention or expose a control.
There is no universal clearance value established for guitar-controller accessories in the cited material. Treat clearance as a design parameter to tune with a test print. A nominal CAD opening alone cannot establish that a printed part will fit the particular controller and printer combination.
How should I choose an attachment approach?
Choose an attachment method by balancing fit, reversibility, service access, and the job the accessory needs to do. There is no universally best method; compare the options against the controller’s actual contact surfaces and the areas that must remain usable.
| Approach | What to check | Main trade-off |
|---|---|---|
| Clip-on | Shell thickness at every clip, the path needed to install it, and whether the clip clears buttons and moving controls. | Can avoid permanent changes, but the measured fit and retention geometry are critical. |
| Screw-mounted | Whether suitable holes or mounting points exist, their diameters and depths, and room for the fasteners. | Offers a defined fastening interface; confirm that installation is appropriate for the specific controller. |
| Adhesive | Contact area and whether the chosen placement covers a service panel, connector, or control. | May be difficult to remove cleanly; avoid assuming the controller surface is suitable without checking. |
| Strap-mounted | Strap-hardware position, available clearance, and whether the accessory interferes with strap movement. | Uses the strap area as an interface, so it must preserve the hardware’s operation. |
For each approach, ask whether the battery, connectors, neck joint, and controls remain accessible; whether the interface is a precisely measured cavity or can be adjusted or shimmed; and whether the part can be removed without modifying the controller. A removable neck and mechanical fret or strum controls appear in ClickForge’s custom-controller description (product description); Phantom Limb Designs describes controllers with detachable headstocks and screw-and-hex-wrench assembly (product description). Those are examples of custom hardware approaches, not dimension references for a different controller.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How do I validate the fit before printing the full accessory?
Print a small test coupon that includes the most restrictive opening, one mounting feature, and the adjacent wall. Test it on an unpowered controller first, then confirm the assembled accessory leaves controls and service areas usable before committing to a full print.
Free tools Windows power users keep installed
One-click scans. No signup required.
Rank #4
- Long Nib and Deep Hole Marker: Our mechanical carpenter pencil with 45mm nib is designed for easy marking of deep holes or narrow areas. These construction pencils are the great choice for woodworking tools, construction tools, carpenter tools, contractor tools, wood carpentry tools and architect tools
- Extra Refills in 2 Colors for Versatile Marking: The construction mechanical pencil comes with 12 extra 2.8mm refills, including 6 red and 6 black refills. The black refill is suitable for light surfaces, while the red wax is perfect for dark surfaces. Our carpenter mechanical pencil makes sure that you'll have an ample supply for extended use
- Built-in Sharpener: Our construction pencil comes with a built-in sharpener to ensure the mechanical pencil tip is always sharp and ready for use. Never buy an extra pencil sharpener again. A great tool for any woodworker pencil, contractor pencils. The refill can easily be extended or retracted with a simple click of the pencils mechanical, allowing you to work more efficiently and accurately
- Portable Clip Design: Our deep hole construction pencil features a portable clip design, easy to carry and attach to your pocket or tool box, so that you can keep the carpenter pencils mechanical close at hand, making it a convenient tool to have on the go. Great gifts choice for carpenters
- Stronger Pencil Lead: The black refills are made of lead, sturdy and smooth. The red refills are made of wax, clear and light. These marking pencils are much thicker and stronger than normal pencils during the marking process of construction work, suitable for various surfaces, such as glasses, metal, boards, floors, walls, furniture, etc. The written marks can be easily wiped with a wet paper towel when needed
- Choose the critical interface. Include the tightest opening or contact, a representative fastener or mounting feature, and enough adjacent wall to assess how the part seats.
- Fit it while the controller is unpowered. Check that the coupon seats fully and does not force the controller or its controls out of position.
- Check clearances. Confirm that it does not press buttons, restrict the strum or whammy controls, or cover connectors, battery access, or strap hardware.
- Test full movement. Once the accessory is assembled, move the relevant controls through their full range and check for interference.
- Adjust and repeat as needed. Use the observed fit to tune the CAD clearance rather than assuming a universal tolerance. Keep the measurements and print settings for each iteration.
A coupon tests the features most likely to determine fit without requiring a full-size print for every adjustment. It does not replace checking the finished part’s complete control range and service access.
Which print settings should I record?
Record the settings used for each prototype so you can relate a fit result to the print that produced it. At minimum, document the printer, nozzle, layer height, material, infill, perimeters, orientation, and support settings.
Published examples are not universal prescriptions. Adafruit documents PLA and a minimum printer build area of 250 × 148 × approximately 50 mm for its four-piece enclosure (printing information). A separate published controller build reports PLA, 15% infill, two perimeters, and a 0.2 mm layer height (build listing). Those settings describe different projects; they do not guarantee a fit or adequate strength for every accessory, printer, or load.
What common measurement mistakes cause a bad fit?
Most avoidable fit problems come from measuring the wrong controller, using inconsistent references, or designing around the controller’s outline while overlooking interfaces and moving parts. Use this check before exporting a final model.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
- Copying dimensions from another device: confirm the model and revision, then measure the actual unit.
- Using an undefined origin: write down the datum face, origin, and X/Y/Z directions before recording hole coordinates.
- Measuring only the outside: include contact surfaces, openings, recesses, fasteners, service panels, and moving-control clearance.
- Trusting a single reading: take at least two readings of each critical feature and re-zero the caliper when values disagree.
- Recording a false recess depth: note whether the caliper jaw reached the feature’s true bottom.
- Assuming an external dimension reveals the inside: do not invent hidden geometry; only remove covers when documentation permits it.
- Assuming CAD fit equals printed fit: test a coupon and tune clearance from the actual result.
- Forgetting service and control access: check connectors, battery access, strap hardware, and the complete travel of controls before finalizing the accessory.
Frequently Asked Questions
Do I need a digital caliper to measure a guitar controller?
A caliper is specifically recommended for measuring small features such as button diameters, and the workflow depends on accurate readings of critical interfaces. A ruler can help establish an overall envelope, but it is not a substitute for measuring small openings, holes, and control features precisely.
Should I measure the controller in inches or millimetres?
Use millimetres for the worksheet and CAD model, as in the measurement workflow here. If a manual gives inches, convert the source value carefully and keep the source units in your notes so you can distinguish a published figure from a measurement you took.
Can I reuse my accessory measurements for a second controller?
Only if you verify that the second unit has the same model and revision and confirm the critical interfaces on that unit. A shared product family or similar appearance is not enough to establish that openings, controls, or mounting points line up.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitches
