CNC Manufactured

Our Dobsonian Mounts
Mount Choices Overview.
Standard Solid.
Custom Solid.
Custom Collapsible.
New! Dob Stand "Back Savers".
Primary Mirror Gear
Masks To Sharpen Images.
Alt and Az Bearings
Altitude Bearings.
Altitude Laminate Strips.
Altitude Teflon Pads.
Azimuth Teflon Pads.
Rings For Tubes
Clamshell Rings for EQ Heads.
Upcoming Items
Contact us to inquire.
Altitude Bearing Tube Braces
Altitude Bearing Tuned Guides.
Aperture/Solar Intigrated Masks.
Mirror Box Intigrated Cells
Mirror Clip Custom Masks.
Rotating Tube Rings.
Standard Altitude Bearings.

Upper Tube Assembly Rings.

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Clamshell Rings
For up to 12" tubes. E-mail for larger sizes and shipping estimates

Clamshell drilled for dovetail plate

For equatorial head.

For Dob Mounting

Type Clamshelll Ring
Kit Drilled for Equatorial Head Mounting.
Kit With Small Bearings up to 12".
Kit With Large Bearings up to 18".

Tube Diameter using cloth tape measure.

Clamshell rings allow you to place your telescope on an equatorial head or with bearings on a Dob mount. Custom designed to fit the outer circumference of your telescope tube, heavy duty rings can be drilled to match your mounting plate hole pattern. If you are building your own mount consider a clamshell ring and bearings. Includes bearing laminate.

Kit: All parts included, wooden parts are rough sanded with 80 grit, holes predrilled. All parts dry-fitted before shipping. Kits may be shipped worldwide. What you'll need: Philips screwdriver, sandpaper, wood glue, adhesive backed felt to line inside of rings.

CNC precision cut 3/4" Baltic Birch plywood. Anodized heavy duty aluminum piano hinge. Steel wood screws. Clamshells open and close using a 2-1/4" thumb screw that passes through one of the top boards into a 1/4-20 brass threaded insert in the abutting board. Rotating ring segments ride on teflon and crystal 909-42 Formica.