...more concerned with stiffness to reduce amplitudes... OK, in this case BIGGER base is better than smaller base ;) I'm not so sure. The problem with bigger bases is they have more area for external influences to induce vibrations, lower frequency resonances, and can support larger vibrational amp...

I use an 12"x18"x3" granite surface plate . Weighs 79 pounds. If you live near a machinery supply, they are fairly inexpensive. Shipping can be expensive. Holes are easy to do with masonry drills. How do you mount things to it? Threaded inserts in the holes? Epoxied inserts work well. I used throug...

I use an 12"x18"x3" granite surface plate. Weighs 79 pounds. If you live near a machinery supply, they are fairly inexpensive. Shipping can be expensive.

Holes are easy to do with masonry drills.

Edit: This is the reason paragraphs I wrote for my eBay listing to explain why I don't accept return any more: Quote Sorry, I cannot accept return terms set by eBay's rules. eBay's system has many bugs for returns. Recently, in a "buyer's remorse" case, eBay agreed with me that buyer should pay for...

Those nuts either dont elimiate it OR increse system wear overtime with backlash returning. Actually, Acetal (Delrin) has a small amount of flex in it which allows nuts to ride firmly on both flanks of the thread. The split nut design can compensate for wear by applying more pressure with the set s...

You can find the TR8 leadscrews on Aliexpress in 1,2,4, and 8mm pitches. I have a 500mm long TR8-1mm for another project. The quality appears to be excellent. You will need to be able to machine the ends in order to make it fit the rail.

My understanding is missing microsteps is different than missing full steps. Missed microsteps don't necessarily mean a step is lost. Microsteps should not be used to calculate the accuracy or resolution or repeatability of the system.

I hope to be able to get good speed (>1mm/sec) rail performance and simultaneously achieve sub-micron resolution (~0.3um) with 400 step motors and 1mm pitch screw threads (as on the KR20) with very smooth rail performance with minimum vibration impact and no missed microsteps. I don't think that sh...

I hope to be able to get good speed (>1mm/sec) rail performance and simultaneously achieve sub-micron resolution (~0.3um) with 400 step motors and 1mm pitch screw threads (as on the KR20) with very smooth rail performance with minimum vibration impact and no missed microsteps. I don't think that sh...

Magnets will work better than Velcro

Orthographic stitches are almost impossible to do without either distorting the subject or having stitching artifacts. In my opinion, the only good methods to make large panoramas are by rotating the lens/camera around the entrance pupil or using a telecentric lens. That being said, try Autopano Pro...

Is this still your horizontal rig? If so, it shouldn't be too hard to convert it vertical.

Just put a hinge on your horizontal setup

The SLA printer should be able to do fine threads. Whether or not they will be strong enough is the question :D On my FDM printer, I can reliably make Module 1 gears and GT2-3mm timing pulleys. I usually print in ABS and occasionally with nylon. Both need a heated bed and enclosure. Lens hoods are a...

I use Fusion 360. It's free to most people. The learning curve isn't too bad. Blender is also free, but the learning curve is steep.