2.4 Not Much Of A Diary Formbot 2.4r2

[leesafur]

First build and I must say I'm pretty darned impressed with the Formbot kit. I only had a few issues with the kit. The supplied probe was for the older versions and with the r2 the probe sits level with the nozzle. No power wire supplied for the exhaust fan. One of the BTT TMC2209 quit working while tuning the printer for the first time but thats not really a Formbot issue. Other then that its been great... Lots of extra hardware and I even got lucky with a Raspberry pi4! I'll post some more pics as I finish things up a bit.

[Demosth]

Love the color scheme - not sure about the Bengals though  

Thanks for posting looks like a clean build, i'd love to see some prints from it!

[leesafur]

I've always said about the Bengals... They've got good colors! lol

Spent most of today trying to figure out how to control the chamber temp using the exhaust fan and a DS18B20 connected to the pi.

Current rabbit hole I'm in lol

[temperature_fan my_temp_fan]
#pin:
#max_power:
#shutdown_speed:
#cycle_time:
#hardware_pwm:
#kick_start_time:
#off_below:
#tachometer_pin:
#tachometer_ppr:
#tachometer_poll_interval:
#   See the "fan" section for a description of the above parameters.
#sensor_type:
#sensor_pin:
#control:
#max_delta:
#min_temp:
#max_temp:
#   See the "extruder" section for a description of the above parameters.
#pid_Kp:
#pid_Ki:
#pid_Kd:
#   The proportional (pid_Kp), integral (pid_Ki), and derivative
#   (pid_Kd) settings for the PID feedback control system. Klipper
#   evaluates the PID settings with the following general formula:
#     fan_pwm = max_power - (Kp*e + Ki*integral(e) - Kd*derivative(e)) / 255
#   Where "e" is "target_temperature - measured_temperature" and
#   "fan_pwm" is the requested fan rate with 0.0 being full off and
#   1.0 being full on. The pid_Kp, pid_Ki, and pid_Kd parameters must
#   be provided when the PID control algorithm is enabled.
#pid_deriv_time: 2.0
#   A time value (in seconds) over which temperature measurements will
#   be smoothed when using the PID control algorithm. This may reduce
#   the impact of measurement noise. The default is 2 seconds.
#target_temp: 40.0
#   A temperature (in Celsius) that will be the target temperature.
#   The default is 40 degrees.
#max_speed: 1.0
#   The fan speed (expressed as a value from 0.0 to 1.0) that the fan
#   will be set to when the sensor temperature exceeds the set value.
#   The default is 1.0.
#min_speed: 0.3
#   The minimum fan speed (expressed as a value from 0.0 to 1.0) that
#   the fan will be set to for PID temperature fans.
#   The default is 0.3.
#gcode_id:
#   If set, the temperature will be reported in M105 queries using the
#   given id. The default is to not report the temperature via M105.

 

[OG_31]

What probe did you end up using? I had the same issue

[leesafur]

On 5/7/2022 at 3:37 AM, OG_31 said:

What probe did you end up using? I had the same issue

DS18B20 Connected to the pi

[leesafur]

Is a printer you build yourself ever finished? Probably not lol. The printer has around 160hrs on it now with only one outstanding issue... I need to solve why the side panels are bowing in when the chamber is heated for printing ABS. They bow in and the gantry ends up rubbing and scratching the panels. Any ideas? 

Picture of the wiring mostly finished and yes I couldn't wait to print the SB.

 

[Demosth]

Very nice!

[Penatr8tor]

On 4/26/2022 at 9:43 PM, leesafur said:

The supplied probe was for the older versions and with the r2 the probe sits level with the nozzle. No power wire supplied for the exhaust fan. 

 

Same with my kit. I had to cut the plastic (on the probe) to get it to fit. Also no extension wire for the exhaust fan either. I found one on Amazon that did the trick.

[Buurman]

On 5/23/2022 at 1:44 AM, leesafur said:

I need to solve why the side panels are bowing in when the chamber is heated for printing ABS. They bow in and the gantry ends up rubbing and scratching the panels. Any ideas? 

Did you put the thicker foam on the side panels, between frame and window? They are quite far from touching the gantry parts in my case, at least 3mm and thats right next to the frame, so it cant bend that far there? Also make sure you bent the extra length of belt away from the windows, cause they could rub the window.

[Buurman]

Ah, on the video I notice you changed some things

I like the belt covers (bottom)  looks cool!\

Also, I see you have stiffend your gantry with a rail on top? looks great, was it affordable? 

How is your bed mounted? looks like you customized something there... 

 

 

Edited June 9, 2022 by Buurman

[leesafur]

Yeah I used the thicker foam.. It only rubs when the chamber is heated.

The rails have the titanium backers  https://3dmakerparts.com/products/titanium-extrusion-backers-v2-4-trident

The bed mounts are MRW https://3dmakerparts.com/products/matched-height-kinematic-kit?pr_prod_strat=description&pr_rec_id=0af9c0652&pr_rec_pid=6969268240591&pr_ref_pid=6979259138255&pr_seq=uniform

The bed mounts were a pain in the azz...  The problem is that they raise the bed 25mm and all of the printer addons don't fit. Z-endstop, purge bucket, brush and bed fan mounts had to be designed. Also I think the bed mount magnets are getting weak after 320hrs of print time.. It takes vary little pressure on the bed for it to tilt.

[Buurman]

Ordered the titanium rails, since I already wanted them but now made up my mind

thanks

the bed mount don’t seem like something I would like, yet they look awesome  

I have no issues yet with taco bed or anything but let’s hope it stays that way.

vool build, hope you find why your sides are bending so much, but I guess titanium sides would be looking cool