Gears & mechanics STL guides ·
Split gear ring STL: Create a Custom-Size 3D Model
Create a custom-size split gear ring STL for your own 3D printer. Check the model controls, measure the fit and buy the generated digital file.
Measure the outside of the rotating focus ring and match the module to your manual follow-focus pinion. The two halves fit around the lens, with their clamping ears below the teeth. Supply two M3 screws with nuts and a thin soft liner. The radial fitting allowance provides room for this liner. Tooth count is calculated from the diameter, radial wall offset and module. Overall width is the toothed-face width plus 6 mm. Check free rotation, both split joints and clearance from neighbouring lens rings before use. Tighten gently and operate by hand.
With the Split gear ring for manual lens follow-focus drives template, you can turn those measurements into a custom-size STL. Review controls such as focus-ring outside diameter, toothed-face width, radial distance to pitch circle, check your model in the preview and choose the digital file. You buy the generated STL and print it on your own 3D printer, using your preferred filament and slicer settings.
Measurements for your split gear ring STL
The product page exposes the following useful geometry controls. Work from your measured parts and check the displayed units and the preview before entering final values.
| Model control | What to check |
|---|---|
| Focus-ring outside diameter | Measure the external mating surface; compare it with the receiving opening. |
| Toothed-face width | Measure across the named feature and allow space for the neighbouring parts. |
| Radial distance to pitch circle | Use a consistent reference point on adjacent repeated features. |
| Mating-gear module | Check this feature against the matching component and confirm its effect in the 3D preview. |
| Radial fitting allowance for a thin liner | Check whether the input adds an allowance or describes the finished opening. Avoid adding it twice. |
Check the mating mechanism before choosing an STL
A mechanism can look right in a picture and still fail to mesh or align. Keep the mating geometry, shaft connection and available axial space together in your notes. Changing a gear or drive component by uniform scaling also changes dimensions that may already be correct. Use the actual model controls and inspect a slow, unpowered trial assembly before considering a working mechanism.
Configure the model, buy the STL and print locally
- Open the split gear ring product page and compare the model preview with your application.
- Enter the relevant measurements. Use the units displayed beside each input; convert inch measurements before using a millimetre field.
- Review the complete geometry and keep a record of your parameter values. Check small openings, mating features and remaining wall thickness.
- Choose the digital STL purchase option and review the current price and order details before payment.
- After receiving the STL, open it in your slicer, confirm the imported dimensions and inspect the layer preview before printing.
Configure my split gear ring STL
Check a first print before making more
A CAD dimension and a printed dimension can differ. Print a fit sample or one prototype before making a batch, and check the features that contact other parts. Choose print orientation, supports and material for the actual geometry and application. There is no universal clearance or print profile that guarantees the fit on every machine.
Before you choose your STL
Why configure the model instead of scaling a download?
Uniform scaling changes all dimensions together. Here you can work with the available controls, including focus-ring outside diameter, toothed-face width, radial distance to pitch circle, and check the result before purchase. Keep your input values for later revisions: the downloaded STL contains the final mesh, rather than the original parametric editing history.
What do I buy?
Select the digital STL option for the file you will print yourself. Review the current price and selected configuration before paying. Ordering a finished print is a separate option.
Make the next print fit your project
Have your measurements ready? Open the split gear ring template, adjust the model and inspect the preview. When the geometry matches what you need, choose your STL and take it to your own printer.
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