OpenBuilds Coupon Codes October 2026 – 50 Verified Offers

Good deal on a V-Slot

I was looking to build a custom linear setup and needed some V-Slot Linear Rail. I saw they had a holiday sale going on and ended up getting a really good price, about 15% off. Shipping was standard, took 5 days to reach me in California. Felt like I got good value for my money.

Mostly happy with C-Beam kit

I purchased the C-Beam Machine kit and some extra Tee Nuts. The kit itself is well-designed and the instructions online were clear enough to follow. Everything arrived securely packed. My only minor issue was that the estimated delivery time was 7 business days, but it actually took 9. Not a huge deal, but I was eager to get started. The parts themselves were good quality, especially the C-Beam Linear Rail. For the price, it's a solid entry into CNC, just wish shipping was a bit more precise on the estimate.

Decent value, good support

I bought a LEAD CNC Machine kit during a holiday sale. The price was competitive, and the bundle discount was a nice touch. Shipping took about 5 business days to reach my location in Florida, which was reasonable. The assembly instructions were mostly clear, though I did have one question about the wiring for the BlackBox Motion Control System, and their tech support got back to me within a day with a helpful answer. The machine itself is solid for the price. My only minor gripe is that a few of the M5 Screws were slightly burred, but I had spares.

Good parts, quick delivery

I ordered some V-Slot Linear Rail and a few M5 Screws. Shipping was fast. Everything arrived correctly. Parts were high quality. Will use again for future projects.

Fantastic Experience, Totally Recommend!

I just built my WorkBee CNC machine and it's amazing! I bought the full kit and also added some extra Drag Chain and a Mean Well Power Supply. The instructions were really clear, and the parts felt super sturdy. It was actually fun putting it together, even the fiddly bits like the GT2 Timing Belt. Shipping to my place in Ohio was quick too, only took about 4 days which was perfect. I'm already planning my next project and will definitely be back for more components. This store is awesome for maker stuff!

Reliable parts, as always

I've ordered from OpenBuilds a few times now, mainly for V-Slot and gantry plates. This time I needed more C-Beam Linear Rail and some Eccentric Spacers for an expansion project. Everything arrived consistent with my previous orders – good quality parts, well-packaged, and they shipped out pretty quickly. It's why I keep coming back, honestly. I do wish they'd offer a few more shipping options, sometimes the standard one takes a bit longer to get to me in California.

Good first purchase overall

This was my first time buying from OpenBuilds. I was looking to build a small router and found their prices on the NEMA 17 Stepper Motor and V-Slot Gantry Plate to be pretty good, especially with a small clearance discount on some of the aluminum extrusion I needed. I compared a few sites, and OpenBuilds had the best overall value for the specific parts I required without having to buy huge bulk. Shipping cost was fair, and it got here in about a week. The packaging was a bit excessive for some of the smaller items, but at least nothing was damaged. I felt like I got my money's worth.

Quick delivery, solid parts

Ordered some GT2 Timing Belts and Pulleys. Shipped fast. Parts were as expected, good quality. One pulley had a tiny scratch, but it didn't affect function. Happy with the purchase.