Linear Guide Rail

[nelsonic]

We are making a running pantry/storage system for the Laundry room https://github.com/dwyl/home/issues/311 I briefly researched Linear Guide Rails but the commercially available ones are prohibitively expensive. It would be bearable if we only needed one, but we need four of these ...

https://eur.vevor.com/linear-guide-rail-c_10531/vevor-linear-guide-rail-set-sbr16-2000mm-2-pcs-78-7-in-2000-mm-sbr16-guide-rails-and-4-pcs-sbr16uu-slide-blocks-linear-rails-and-bearings-kit-for-automated-machines-diy-project-cnc-router-machines-p_010560536740?currency=EUR&lang=en

Lower precision but higher total cost (inc shipping): https://pt.aliexpress.com/item/1005006094228570.html

So ... I'm going to make my own rail system using Skateboard ballbearings and mild steel in the workshop. It will be able to hold 300kg because I'm using an IPN 80 Structural Steel Beam. https://www.dlubal.com/en/cross-section-properties/ipn-80-en-10365-2017-arcelormittal-2018

The bearings are reasonably cheap when purchased in bulk:

https://www.amazon.es/gp/product/B0D964RGGH

ordered last week, should arrive today:

Need exactly 48 for the design I have planned. Already had 8 in the workshop for a future project that I will now replace. But have everything I need to get this done. :whie Heading down to the workshop now to build! 👷 Cue the tune: youtu.be/UAO2JBjRRBk 🎶

[nelsonic]

Prototype guide rail in place:

Confident this will work well. Total material cost is ~€20. And is 10x stronger than anything we can buy from a supplier.