● 17 min readShowdown: Uno R4 vs Uno R3 vs Nano
Welcome to Vol. 12 of The Probots Showdown. Three boards. Three price points. Three very different futures for your project.Should you stick with the
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Robust 90mm aluminum alloy pull handle for industrial machinery and T-slot framing. Metal construction offers superior strength and heat resistance compared to nylon. Ideal for 3030 aluminum profiles, 3D printer enclosures, and equipment doors.
Upgrade your machine build with the 90mm Aluminum Alloy Handle. While nylon handles are fine for light duties, this solid metal handle is built for the rigors of industrial environments. It provides a rigid, non-flexing grip perfect for lifting heavy lids, opening tight doors, or maneuvering portable equipment built on Aluminum Extrusion frames. Its 90mm spacing is particularly well-suited for 3030 Series profiles, spanning exactly three slot units on a grid, but fits universally on any T-slot rail.
Heat Proof : Unlike plastic handles that can soften in a heated 3D printer chamber or industrial dryer, this aluminum handle withstands high temperatures without losing strength.
Chemical Resistant : Anodized/Coated aluminum resists cutting fluids, oils, and solvents that degrade rubber or plastic grips over time.
Material: Solid Aluminum Alloy
Hole Spacing (Center-to-Center): 90mm
Total Length: Approx. 106mm
Mounting Type: Front Mount (Through Hole)
Hole Diameter: Fits M5 or M6 Screws (Standard for 20/30 series profiles)
Finish: Industrial Matte/Satin (Silver or Black)
Load Rating: Heavy Duty (40kg+)
3D Printer Hoods: Rigid handles for Voron/RatRig enclosures (heat resistant).
3030 Frame Builds: Perfectly proportioned for medium-duty aluminum structures.
Test Equipment: Rugged carrying handles for portable analyzers.
Toolboxes: Replacement metal handles for cracked plastic ones.
T-Nut Selection:
For 2020 Profile: Use M5 T-Nuts and M5 Socket Head Screws.
For 3030 Profile: Use M6 T-Nuts and M6 Socket Head Screws.
Alignment: Since 90mm is a precise dimension, ensure your T-nuts are positioned correctly in the slot before tightening.
Screw Type: Always use Socket Head Cap Screws. The handle has counterbored holes designed to hide the cylindrical head of an Allen bolt for a flush finish.
Included:
1 x Aluminum Alloy Handle (90mm)
(Mounting Bolts & T-Nuts are NOT included)
Required (Sold Separately):
T-Nuts: (Size M5 or M6)
Socket Head Cap Screws: (M5x12mm or M6x16mm typically)


What is the hole distance?
90mm center-to-center.
Is it plastic or metal?
Solid Aluminum Alloy (Metal).
Will it fit 2020 extrusion?
Yes. It is a bit wide for 2020, but fits securely using M5 T-nuts.
Does it fit 3030 extrusion?
Yes, it fits 3030 profiles perfectly.
Does it come with screws?
No, you must buy screws based on your panel/profile depth.
Is it magnetic?
No, aluminum is non-magnetic.
Can I use it on a heated chamber?
Yes, it is heat resistant (unlike the nylon version).
What screw size do I need?
M5 or M6 Socket Head Cap Screws work best.
Can I use it outdoors?
Yes, aluminum is corrosion-resistant.
Is the finish smooth?
Yes, typically a smooth industrial matte finish.
How much weight can it hold?
It is very strong (rated 40kg+), limited only by your screws.
Can I use countersunk screws?
No, the holes are flat-bottomed. Use Socket Head screws.
Is it stronger than the nylon one?
Yes, significantly rigid and durable.
What is the total length?
Approx 106-110mm.
Can I paint it?
Yes, if you prime it first.
Is it suitable for lifting?
Yes, perfect for lifting handles on cases.
Does it fit 4040 profile?
Yes, fits easily on the wide 40mm face.
Is it hollow?
No, typically solid metal.
Why use 90mm?
It's a compact size that doesn't take up too much rail space.
Is it conductive?
Yes.


Probots sells every Electronics Part for your next Project. You can order 10,000+ Electronic Parts Online - Arduino, Raspberry Pi, NodeMCU Development Boards, Sensors, Motors, Motor Drivers, SMPS, Plastic Enclosures etc in India directly on probots.co.in
We delivery electronics components and parts throughout India using standard couriers like Bluedart, Delhivery & India Post.
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Probots sells every Electronics Part for your next Project. You can order 10,000+ Electronic Parts Online - Arduino, Raspberry Pi, NodeMCU Development Boards, Sensors, Motors, Motor Drivers, SMPS, Plastic Enclosures etc in India directly on probots.co.in
We offer specialized services for Bulk, Wholesale & B2B Customers like discounted prices, additional shipping options, customised products, etc . Customer with large quantity & regular orders qualify for the specialised discounted rates.
We also offer dedicated sales team to assist you with the order process by providing sales quotations, PI, technical support for choosing products, etc.
Note: Business Orders are processed manually and usually take 1-3 days to process compared to placing the order directly on our website. Please plan your purchases accordingly.
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