Hi you all!
First post here...i'm now a proud owner of the FT-5 R2!!!! I would like like to share my impressions....
First sights of the kit on the web last year, then feels like i've found what i'm looking for...but no rush with 3d printers and many other things is the best way i think...so waited a bit
and then the R2 comes off...wonderfull!
I thinks it is a well engineered machine simple and sturdy! so with the R2 Kit...no more doubts!
First the sinchronized Z-leadscrews are a must, then the ACM material is very good! with the downside is that de-burring and cleaning of ACM part took a good part of the assembly process.
This were not my first printer so i made some personal upgrades:
MKS Sbase 32 bit control board,
12v 3.2A auxiliary PSU(for LED and maybe other things in the future) with a 5V 1.5A stepdown for 5V logic power(fed thru USB power wires),
MKS TL Smooters on X, Ys and E steppers for limit noise and tipical artifacts coming from DRV8825 drivers @24v(embedded with the board)
DC-AC 10A SSR to power on the main 24V PSU only when needed and switch it off after print finished(as per PS_ON pin on marlin/ramps boards, used pin 1.22 on Sbase J8)
MKS Heat bed MOSFET to route many amps out of the control board, with an extra 20A car blade fuse for protection(tried first with 15A, but my bed is nearly 2.0ohms in resistance and the fuse metal connection inside comes red in seconds from bed power up)
My first thoughts were to reuse my old 128x64 LCD...but ended with a MKS TFT32 and its power outage sensor(its not as a real UPS, but it works nicely, and i think its needed since the big prints that the machine could make) and plus... just plug in it a spare simple endstop and you a have a ready filament runout sensor!
- I've never tried before the MK9 extruder...now i think its good for the job...but i've a lot of 3mm filament in stock so i bought a E3D Titan AERO(3mm 24v) maybe i will replace the extruder stepper with a lighter one in the future.
It took almost a week to assembly, perform calibration and test prints...and OMG! parts are of wonderful quality... but i ended the sample filament and had to stop test prints, Since the first tests i was able to speed-up the machine until 100mm/s and more without any issue! Astonishing!
The only issue i had was related to Y-Stepper current setting, first i wired both steppers to a single driver as describe in the build manual but was not able to find the "sweet point" in current adjustment as per other steppers...the sound/noise from y-steppers did not satisfied me, so made some calculations, 1.5A dual stepper needs 3A total, that could not came out of an 2A driver...ended doubling theY axis driver on the E2 driver (beta motor on epsilon motor for smoothiware users) to wire the Y axis with a single driver per stepper and thats it! now it sounds and push very well!
the only downside that i see is that the left stepper is gettting hotter the the right one, even with current set equals for both...i can'explain why but i will make some further investigation later, and maybe update if needed. - Did you have any idea about that???
The new beta build manual is very useful! I've made some comments on the build process directly in the manual file...but as new user can't upload attachments, if useful i could provide it later.
Finally wish to thank Folgertech and Reprap.me for the great product and support! And also Dintid and its very well made instructable on MKS Sbase!