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Products Home / Optomechanical Components / Optical Post Assemblies / Ø1" Optical Post Assemblies / Ø1" Post Construction CubesØ1" Post Construction Cubes
- Build Right-Angled 3D Constructions
- Construction Cubes Contain 1/4"-20 (M6) Counterbored or Tapped Holes
- One-Piece Aluminum Construction for High Rigidity
RM1G
RM1F
SH25LP38
Low-Profile Channel Screws
Ideal for Large 3D Structures
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Low-Profile Channel Screws in RM1G
Construction Cubes
The RM1G and RM1F(/M) Construction Cubes aid in building rigid 3D structures from our Ø1" pedestal posts and other optomechanics. They are machined from a single block of aluminum, providing excellent rigidity, and their faces are parallel and perpendicular to within 0.002" (0.05 mm). The RM1G features three 1/4"-20 (M6) counterbores on adjacent faces, while the RM1F contains a centered 1/4"-20 (M6) tapped hole on all six sides. For the construction of light-tight optical enclosures, we also offer the RM1S Construction Cube, which is slotted to accept hardboard walls.
Low-Profile Channel Screws
In order to fasten optomechanics to the adjacent faces of the RM1G construction cube, our Low-Profile Channel Screws are required. These low-profile screws feature a shortened cap height relative to standard cap screws. This shortened cap allows the screws to be inserted into the RM1G at right angles, as shown to the right.
| Posted Comments: | |
tcohen
(posted 2012-06-25 08:59:00.0) Response from Tim at Thorlabs: Thank you for pointing this out! We have an engineer going over the drawings and series. The RM1G can be used with our SH6M10LP M6 channel screws, but we currently do not have plans for a fully metric (25mm) cube. We would love to get your feedback on this design’s benefits so that we can add it to our customer inspired ideas and I will contact you to continue this conversation. iain
(posted 2012-06-20 08:24:26.0) There is a mistake on the drawing of part RM1G. The length of the side of the cube should be 25.4 mm (and not 25 mm).
Do you have any plans to introduce a fully metric 25-mm-square construction cube? Thorlabs
(posted 2010-10-25 21:56:07.0) Response from Thorlabs to last poster: We will look into modifying the /M cubes for fully metric dimensions. We have to evaluate the impact this design change would have on all the matching components. Please contact us at techsupport@thorlabs.com for follow up. user
(posted 2010-10-25 14:48:45.0) The metric version of the 1-inch construction cubes have, indeed, 1 inch long dimension. Only threads are changed.
Would it be more logical to have a construction cube with 25.0mm external dimension? |
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RM1F Being Used to Mount Two Ø1" Pillar Posts at a Right Angle for an Optomechanical Assembly
- Holds up to Six Optomechanics at Right Angles
- One-Piece Aluminum Construction for Excellent Rigidity
- Parallel and Perpendicular to Within 0.002" (0.05 mm)
The RM1F(/M) Construction Cube contains a centered 1/4"-20 (M6) tapped hole on all six sides. Since it is machined from a single block of aluminum, it is ideal for constructions that need the highest available degree of sturdiness. It can be connected to up to six optomechanics by using setscrews.
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RM1S Slotted Cube Securing a Hardboard Enclosure Wall
- Hold up to Three Optomechanical Components at Right Angles
- RM1G: Counterbored on Three Sides
- RM1S: Counterbored on Three Sides and Slotted to Accommodate Enclosure Walls
- One-Piece Aluminum Construction for Excellent Rigidity
- Parallel and Perpendicular to Within 0.002" (0.05 mm)
These Construction Cubes contain three 1/4" (M6) counterbores on adjacent faces. They can be connected to up to three optomechanical components by tightening our Low-Profile Channel Screws (sold below) through the counterbores, as shown in the images to the right. In addition, the RM1S cube has slotted corners to accept posterboard and hardboard walls for the construction of light-tight optical enclosures. Since both these cubes are machined from a single block of aluminum, they are ideal for constructions that need to be as sturdy as possible.
If compatibility with more than three optomechanical components is needed, or if components are to be placed on opposing faces, please consider the RM1F Construction Cube below.
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Low-Profile Screw in RM1G Construction Cube
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Standard Cap Screw in RM1G Construction Cube
| Item # | Threading | Hex | Head Height | Length | Material | Quantity |
|---|---|---|---|---|---|---|
| SH25LP38 | 1/4"-20 | 1/8" | 0.13" (3.2 mm) | 0.38" (9.7 mm) | Steel | 100 |
| SH6M10LP | M6 | 4 mm | 4 mm (0.16") | 10 mm (0.39") |
Our Low-Profile Channel Screws have a reduced cap head height relative to standard screws, permitting them to be used in tight spaces. In particular, they are recommended when neighboring screws are at a right angle and in close proximity, as in our XE25W3 Corner Cube or RM1G and RM1S Construction Cubes.
Shown to the right are a standard cap screw and a low-profile channel screw installed in an RM1G cube. The low-profile screw's shortened cap height prevents neighboring screws from interfering with each other.
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