Features

• Large Range of Sizes Available from Stock
• 1/2" (12.7 mm) or 3/4" (19.05 mm) Thick
• Standard Imperial and Metric Breadboard Hole Patterns
• Offset Mounting Counterbores Allow a Full, Uninterrupted, Threaded Hole Matrix
• Larger Breadboards Have a Fifth Center-Located Counterbore
  • Imperial: At Least 18" Wide
  • Metric: At Least 450 mm Wide
• Black Anodized Surface with Low Reflectance
• Double-Density, High-Density Versions, and Custom Sizes Available

These solid aluminum, nonmagnetic baseplates provide a convenient and cost-effective platform for assembling prototype optical assemblies, conducting experiments, and mounting small subsystems. They are finished with a black, minimally reflective anodized coating and are through-drilled with a standard 1" (imperial) or 25 mm (metric) hole pattern offset 1/2" or 12.5 mm, respectively, from the edges of the board. The holes are threaded completely through these breadboards, allowing components to be mounted on both sides at once. Breadboards are offered in either 1/2" or 3/4" thicknesses.

Each breadboard features four or five mounting holes that are offset from the array of 1/4"-20 (M6) threaded holes to create an uninterrupted surface for any intended application. The four standard mounting holes are located at each corner of the breadboard, inset 1" from each edge (25 mm on metric). The larger imperial and metric breadboards have a fifth counterbored mounting hole at the center of each board (imperial boards 18" or wider, metric boards 450 mm or wider). Utilizing the center mounting hole increases the mounting options available, reduces stress at the corner mounting holes, and increases rigidity when heavy loads are placed on the boards (see photo to the right). The mounting holes may be used to attach the breadboards to variety of surfaces and mounts, including optical tables, other breadboards, mounting posts, and brackets. Please see the Mounting Options tab for more details.

Click to Enlarge
This finite element analysis simulation shows the vertical displacement of two breadboards with 120 N force applied at center. The 1/2"-thick breadboard on the left shows a maximum displacement of 0.047 mm, while the 3/4"-thick breadboard on the right shows only 0.014 mm. The 3/4"-thick breadboard's increased stiffness leads to lower board displacement.

Click to Enlarge
A fifth mounting hole in the middle of larger breadboards increases rigidity and reduces stress when mounting heavy loads.

Other Breadboard Options
For vacuum applications, we recommend using our selection of Unanodized Breadboards. Optical Breadboard Enclosures are available to protect sensitive equipment from dust, stray light, acoustic noise, and thermal variations. Enclosures are offered completely sealed or with sliding door access.

Thorlabs also offers Double Hole Density Aluminum Breadboards with 1/2" offset hole spacing, doubling the density of mounting holes. These are offered in sizes ranging from 4" x 24" to 8" x 36"
(100 mm x 600 mm to 200 mm x 900 mm) with thicknesses of 0.5" (12.7 mm), making their slim profile ideal for compact work areas. The same double-hole-density pattern is also available on our Circular Breadboards.

Custom Breadboards

For applications with limited space, Thorlabs offers Mini-Series Breadboards with 4-40 (M3) or both 8-32 (M4) and 1/4"-20 (M6) tapped holes. These breadboards feature an increased tapped hole density and thinner breadboard thickness.

Custom Breadboards
We offer a service for custom breadboard orders, with options that include hole pattern and spacing, size, thickness, and anodizing. For a quote, please fill out our custom breadboards form.

Vertical Arrangement

Thorlabs' aluminum breadboards can be mounted vertically (or perpendicular to a mounting surface) using a wide variety of 90 degree mounting plates. For tall arrangements, we recommend the setup shown to the left. Here, the MB12 breadboard is vertically oriented using two VB01 Vertical Brackets. For smaller arrangements, the AB90, AP90, or AP90L Right-Angle Brackets may be used.

Vibration Isolating Feet

Thorlabs' aluminum breadboards may be mounted on a set of vibration isolation feet. These Sorbothane Mounting Feet may be used to isolate a small breadboard from its mounting surface.

Not shown: Standard RDF1 Rubber Damping Feet may also be used where high vibrational damping is not necessary.

Elevated Arrangement with Adjustable Mounting Feet

A set of Ø1.5" Mounting Posts can be used to elevate an aluminum breadboard off of the work surface. At left, an MB1824 breadboard is shown with four P6 Mounting Posts. An adjustable, self-leveling BMF4 Mounting Foot is attached to each mounting post. The self-leveling mounting feet feature rubberized feet and screw thread height adjustment.

Not shown: DP14A Damped Posts are available in 14" lengths for vibration sensitive elevated mounting applications.

Elevated Breadboard Arrangement

A more permanent Aluminum Breadboard mounting option, shown to the left, features pedestal-style Ø1.5" Mounting Posts clamped to an optic bench. The MB1824 Aluminum Breadboard to the left is elevated off the optic bench surface using a set of four P6 Mounting Posts, each with a PB4 Pedestal Base Adapter and PF175B Clamping Fork.

Not shown: Ø1.5" Translating Posts or Ø1.5" Damped Posts may also be used in lieu of the P6 Mounting Posts for applications requiring further height adjustment or reduced sensitivity to vibrations, respectively.

Breadboard Enclosure Systems

Enclosures may be added to Thorlabs' aluminum breadboards to house light and dust-sensitive equipment. Thorlabs offers a variety of plexiglass and standard darkening enclosures. The enclosure shown to the left has the front panel removed for access. Enclosures with sliding doors fabricated from plexiglass or black hardboard are also available.

Breadboard Mounting Brackets

The PSY321(/S) Post Mounted Breadboard Brackets are designed to securely mount breadboards onto Ø1.5" posts. Each bracket will support any aluminum breadboard up to 12" x 12" (300 mm x 300 mm) in size, and has a maximum load capacity of 20 kg (44 lbs).

Not shown: PSY360 and PSY361 Breadboard Mounting Brackets can be used to mount breadboards to the lean bars of a ScienceDesk™ workstation.

Breadboards	Nexus, Optimized Damping	Intrinsically Damped	Aluminum Honeycomb	Stainless Steel	Solid Aluminum
Construction
Breadboard Thickness	60 mm (2.4") 110 mm (4.3")	58 mm (2.28")	25 mm (0.98") 55 mm (2.2")	12.7 mm (0.5")	7.0 mm (0.28") 9.5 mm (0.375") 12.7 mm (0.5") 19.05 mm (0.75")
Working Surface	4003 Grade Stainless Steel or 304L Grade Nonmagnetic Steel Top Plate	4003 Grade Stainless Steel Top Plate	Aluminum	416 Grade Stainless Steel	Solid Aluminum Anodized or Unanodized
Top Skin	5 mm (0.20")	5 mm (0.20")	6 mm (0.24")	N/A	N/A
Bottom Skin	5 mm (0.20")	3 mm (0.12")	3 mm (0.12")	N/A	N/A
Core Design	High-Density Plated Steel Honeycomb, 0.26 mm Thick		High-Density Plated Aluminum Honeycomb	N/A	N/A
Side Panels	Rigid Steel Box Section	Unplasticized Polyvinyl Chloride (uPVC)	Black Laminated Aluminum Sides	N/A	N/A
Ferromagnetism	Magnetic or Non-Magnetic Options	Magnetic	Non-Magnetic	Magnetic	Non-Magnetic
Sealed Holes	Sealed (25 mm Depth) or Non-Sealed Options	Non-Sealed		N/A	N/A
Thread Options	1/4"-20 (M6) Tapped Holes	1/4"-20 (M6) Tapped Holes		1/4"-20 (M6) Tapped Holes	1/4"-20 (M6), 4-40 (M3), or 8-32 (M3) and 1/4"-20 (M6) Tapped Holes
Spacing	1" (25 mm) Centers	1" (25 mm) Centers		1" (25 mm) Centers	1" (25 mm) Centers or 0.5" (12.7 mm) Centers
Distance from Edge to First Holes	0.5" (12.5 mm) on all Sides		0.5" (12.5 mm) or 1.0" (25 mm) on all Sides	0.5" (12.5 mm) on all Sides	0.5" (12.5 mm) on all Sides
Performancea
Damping				N/A	N/A
Stiffness	60 mm (2.4") Thick	58 mm (2.28") Thick	25 mm (0.98") Thick	12.7 mm (0.5") Thick	7.0 mm (0.28") Thick
	110 mm (4.3") Thick		55 mm (2.2") Thick		19.05 mm (0.75") Thick

• The damping and stiffness performance shown here is qualitative and does not relate to exact specifications of each breadboard.

Optical Breadboard Selection Guides

The selection guides below list every size offered for our honeycomb, solid aluminum, and acrylic breadboards. Simply locate the specific width and length needed and then select the type of breadboard. Expand each table by clicking the More [+] button within the header.

Thorlabs also offers several unique breadboard solutions. For applications requiring temperature control, we offer anodized aluminum water cooled breadboards in several sizes, in addition to a temperature-controlled mini-series breadboard for small-scale operations. Our anodized aluminum large-area translation stages and rotating breadboards offer hand-operated positioning control, while our manual and motorized translating mounting platforms are ideal for use in microscopy applications.

• Solid aluminum breadboards are offered with four different thicknesses: 0.5" (item # prefix MB), 0.75" (item # prefix MBH), 3/8" (item # prefix MS), or 0.28" (item # prefix MS). Select sizes are also available without an anodized coating (item #s ending with U).
• Item Number Suffix:
• F, A, B, or G: Non-Sealed Mounting Holes
• T, L, U, or N: Sealed Mounting Holes
• FN or AN: Nonmagnetic Mounting Holes
• Y or Z: No Mounting Holes
• S: Stainless Steel
• Tapped Hole Pattern Aligned at 45°
• Build-to-Order
• Includes a T-Slot in Side Panels for Compatibility with 25 mm Rail Accessories
• This product has an access aperture.
  
  

• Solid aluminum breadboards are offered with four different thicknesses: 12.7 mm (item # prefix MB), 19.05 mm (item # prefix MBH), 9.5 mm (item # prefix MS), or 7.0 mm (item # prefix MS). Select sizes are also available without an anodized coating (item #s ending with U).
• Item Number Suffix:
• F, A, B, or G: Non-Sealed Mounting Holes
• T, L, U, or N: Sealed Mounting Holes
• FN or AN: Nonmagnetic Mounting Holes
• Y or Z: No Mounting Holes
• S: Stainless Steel
• Tapped Hole Pattern Aligned at 45°
• Build-to-Order
• Includes a T-Slot in Side Panels for Compatibility with 25 mm Rail Accessories
• This product has an access aperture.