Product Spec Sheet

Samyang 135mm Lens Collar v1.0

Easy ~5 hrs build time v1.0 · November 2022 PLA+

A 3D-printed lens collar for the Samyang 135mm f/2 ED UMC lens. The Samyang 135mm lens is one of the more popular lenses among astrophotography enthusiasts and this lens collar unlocks its versatility. A must have accessory for those looking for a sleek, minimalist design that is functional but doesn't get in the way.

Product Features

Attachment

Easy to mount lens with secure hold

Aesthetic

Sleek, minimalist design

Mount Options

Multiple - Arca-Swiss, Vixen, etc.

Soft Touch

Padded rings protect your equipment

Materials

PLA+ printed parts, threaded inserts, bushings, and screws

Footprint

116mm x 116mm x 132mm

Bill of Materials

Item	Qty	Spec	Notes
M3 302 self-tapping threaded insert	2	Brass
M4 302 self-tapping threaded insert	8	Brass	(Optional)
M5 302 self-tapping threaded insert	8	Brass
M5 paired threaded bushing	2	Stainless	Cut to 13.5mm
M3x10mm machine screw	2	Stainless	Pan Head
M4x10mm machine screw	8	Stainless	(Optional) Pan Head
M5x12mm machine screw	8	Stainless	Pan Head
1.1mm Foam Rubber Sheet	~65cm²	Sticky-back Sheet	12mm wide and cut to length

3D Printed Parts

SYLC_70mmBaseRing.stl

MaterialeSUN PLA+

Walls3

Infill30% Adaptive Cubic

SupportsNorm. Auto

Est. time~44m

Est. weight~22g

SYLC_70mmTopRing.stl

MaterialeSUN PLA+

Walls3

Infill30% Adaptive Cubic

SupportsNorm. Auto

Est. time~35m

Est. weight~16g

SYLC_80mmBaseRing.stl

MaterialeSUN PLA+

Walls3

Infill30% Adaptive Cubic

SupportsNorm. Auto

Est. time~42m

Est. weight~20g

SYLC_80mmTopRing.stl

MaterialeSUN PLA+

Walls3

Infill30% Adaptive Cubic

SupportsNorm. Auto

Est. time~32m

Est. weight~13g

SYLC_TopPlate

MaterialeSUN PLA+

Walls3

Infill30% Adaptive Cubic

SupportsNorm. Auto

Est. time~46m

Est. weight~17g

SYLC_ArcaSwissBasePlate.stl

MaterialeSUN PLA+

Walls3

Infill30% Adaptive Cubic

SupportsNorm. Auto

Est. time~52m

Est. weight~25g

SYLC_VixenBasePlate

MaterialeSUN PLA+

Walls3

Infill30% Adaptive Cubic

SupportsNorm. Auto

Est. time~63m

Est. weight~34g

SYLC_TopPlate.stl should be printed while oriented along its long side. Additional files exist on Thingiverse to accomodate user requests. Design was also remixed and added to Makerworld also: https://makerworld.com/en/models/1061815-samyang-135mm-lens-collar#profileId-1050177

Print Settings & Assumptions

Layer height

0.2mm

Nozzle

0.4mm

PLA+ temp

220°C / 220°C

Bed temp

60°C / 55°C

Ironing

Topmost Surface

Files are sliced for a 0.4mm nozzle at 0.2mm layer height. Tolerances assume a reasonably calibrated FDM printer. Printed and validated on a Bambu P1S.

Tools Required

Tool	Used for
Calipers	For precise measurements
Phillips Head Screwdriver	Machine screws
Flat Head Screwdriver	Machine screws
Pliers / Multi-tool	Support removal
Hobby knife / scissors	Cutting foam padding

Assembly Guide

Install threaded inserts

Each ring segment requires several threaded inserts. This design uses self-tapping inserts and the hole sizes make it obvious which inserts to install.

Attach the hinge bushings

Press fit one end of the bushing through the top ring segment for both the 70mm and 80mm variety rings. Attach the base ring segments and secure with matching bushing screw.

Attach hinged rings to base

Select either the Arca-Swiss or Vixen base plate and then run four M5 screws through the base to secure to each hinged ring. Take care to ensure that the hinges are aligned to open in the same direction.

Attach top plate

Take four M5 screws and run them through the top plate to secure to the top of the 70mm and 80mm top rings.

Cut and place the foam rubber pads

Cut two 12mm wide by 105mm long strips from the foam rubber pads. Peel backing and attach along the inside of the 70mm ring segements. Cut two 12mm wide by 121mm long strips from the foam rubber pads. Peel backing and attach along the inside of the 80mm ring segments.

Known Limitations

Not rated for payloads over 2kg.

I am satisfied that the design and printing per this recipe are statisfactory for my equipment. However, you should adjust this recipe as you deem prudent and comfortable for your particular setup.