Ft5-r2 corexy conversion

swrightlast 2019-01-13 00:12:24 UTC #1

Where can I find a good source for hardware needed, parts to print, videos, detailed instructions any other goodies for doing this conversion?

Ron 2019-01-13 17:15:52 UTC #2

You might consider an "H" drive conversion instead because it is much simpler and less expensive to do.
It is what is used on printers such as the Ender-4.

I am planning to do that to my FT-5 in the near future but have been too busy with other things including converting it to have a 32 bit processor board recently.
However when I do get around to it I will gladly post any build files for conversion parts.
As far as things to buy, what I have purchased so far are 5 meters of GT2 belting and six idlers (proper ones, not the double bearing things that FT supplies).
As far as I know that should be about "it".
Then I still need to devise a few mounting plates and other things that will need to be printed or fabricated.
I may convert the extruder carriage to something completely different in the process as well, not sure yet.

FRFT 2019-01-13 23:23:38 UTC #3

Can you elaborate on what you mean by proper idler?

Ron 2019-01-14 00:19:07 UTC #4

Sure, these sorts of things rather than a pair of stacked flange bearings-

The choice of toothed or smooth is generally that if the idler is located on the toothed side of the belt use a toothed idler and if on the smooth side use a smooth one.
These types of pulleys have generous flanges that will prevent the belt from walking itself off if it is slightly misaligned to the pulleys.

All of the ones I am using have 3mm bore.
5mm bores could be easier to mount but I like having more bearing and less center bore.
Just a personal preference, these aren't carrying a lot of radial load generally.

I hope this helps.

Wyvern 2019-01-16 07:28:48 UTC #5

Curious how your guy's rigs turn out.

With upgraded steppers, board, hotend, cradle, and lots of printed and alloy bracing I'm getting 100mm/s reliably with minimal ghosting and other issues.

Needs to be direct drive IMHO, I don't like bowdens if they can be avoided.

Ron 2019-01-17 22:22:16 UTC #6

I don't care much for Bowden either but it sure reduces the moving mass.