looking for a good 3d printer

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It was moving at 10mm/s because that is the loudest it is going to be causing the most vibrations, are you saying you preferred the noisier DRV8825 compared to the TMC2100?

Of course I'd prefer a silent driver.

You are completely missing the point, that video was only intended to display the noise difference between the two drivers, nothing else.

OK.

Yes i did dismiss belt driven printers for specific applications, you dismissed Ballscrews for all 3D Printers

That's nonsense.

I think if I build a 3D printer I will use dual ball screws (probably 1004) on the Z with one NEMA23 and belt connecting the two screws. For X and Y I will use direct belt drive.

Which part of that sentence was not clear? The only thing which is wrong there is that I meant 1204 ball screws. I also said that there are different quality of belts on the market, not necessary steel belts, but also not need to buy the cheapest rubber band, which of course will cause problems, not only because of heat but also stretching. Regardless of which I did NOT dismiss ball screws for 3D printers, I said thet I THINK I'd use belt (not said rubber belt!!!). Whatever will be is written in the starts right now. I will probably only use my CNC to start with and then decide if I want to build one at all, or if I just use my CNC for 3D printing occasionally. I will definitely not print large parts or parts which takes 40+ h to print.

... but actually they are required for specific applications - as i stated before, if you are printing in materials such as Nylon or Polycarbonate, you need to have a bed temperature of 120c+, and almost certainly need the printer in an enclosure to maintain the correct ambient temperature.

OK

Now if you try and print a large object, where the first layers are going to be printed very slowly, the toolhead and the belts connected to it would be exposed to high ambient temperatures from the Heatbed, these will cause standard rubber belts to distort, i've seen it happen. Maybe you could get some steel belts or whatever, but whats the point when ballscrews are so cheap and offer far superior performance.

Look im sorry, but go and do some research, LARGE 3D Printers, depending on their architecture, will print at an acceptable quality from 40 - 60mm/s. Now if im printing a full size object on my printer (400 x 400 x 400mm), at a high resoluton maybe 150 - 250microns it will take 40+ Hours, thats standard - not a big deal.

For just one example, check out this video, i have set it to start just before he tells you how long it took to print - Just under 100 Hours.


Thanks

Alex

I don't plan to start and industry... so it is not relevant for me and don't have time to watch, and I believe most DIY 3D printer builders/users never print anything that takes 100 hours and never use or build a LARGE 3D printer anyway.