I print solely on PLA and i have tried printing at 185 to 215 and yet the problem persist. How do i ensure that it is as smooth as silk? Put some wax in it?

Anyway, im planning to test out printing on a decreased speed. Any suggestion on what speed to use? 90%?

observe when the jam happen, example if the jam only happen during infill, try decrease the infill speed at the Speed setting

I made some observation and found out that the jam will and can happen anytime not just during the infill stage. Im really lost here.

By the way, is it possible that the extruder stepper could be a culprit here?

have you checked the filament quality, or perhaps change to another spool of filament? normally defaults power on the stepper driver plenty enough but if you have someone near that have extra stepper motor you can always borrow it from them , my pass exprience with blomker hotend the PFTE lining is always the culprit as mostly due to my faults printing at higher temp which reduce the PFTE lining , i think blomker sent me twice already the lining but I suggest go to ebay and but a higher melting point PFTE lining or use the the one you buy with out the lining

I have tried numerous spool from 2 different sources but the result is still the same. Im using the barrel without the lining and it is still the same. Argh!!! This is really frustrating!!!

Sometime extruder motor will skip step also if nozzle really close with bed

yeahh another reason also, uneven bed can cause this too

I am quite certain that the printbed has been adjusted to be as even as possible. Have been through that tedious phase of calibrating the Z-axis countless time that I think i can safely said that I have finally master the art of it.

Anyway, last night i took the extruder unit apart for some simple servicing. Once i have resemble the feeder unit to the stepper unit, the stepper refuse to work altogether! With that problem in hand, I checked the stepper wire, stepper motor and stepper controller and all seems to be working. Now i suspect that this has something to do with a faulty RAMPS. I will be able to confirm this once I can get my hands on a RAMPS. Any suggestion where i can get my hands on a RAMPS?

Thanks in advance.

you try aliexpress or ebay, or if you dont mind paying more buy it from local vendor few of them selling it, before you start ordering have you try swapping the stepper motor driver for the extruder with X axis example

Yup, I have tried swapping the stepper motor driver from one of the other stepper motor but the stepper on the extruder slot still refuse to work. That is why i conclude that it has something to do with the RAMPS.

I used to have issues with stepper motor wires getting loose from the motor end. Although it seems fairly well attached to the motor but jiggling it during prints cause it to skip. Try swapping the stepper motor instead and see if its really is the RAMPS fault.

Alright! I will try that out too! Thanks in advance guys and will keep everyone updated.

Ok, thanks for your advice.
Do you have any preferred link for reference ?

The link is: http://reprap.org/wiki/List_of_Firmware

Currently, the most common firmware used in open source repraps is Marlin but you can try Repetier-Firmware since you can customize the firmware from their website.

been using both does not seem to see any different both act the same way, at the end of the day it all up to your slicer software for good end results, now days I have been using simplify3d with my flashforge still haven't got around fixing my kossel

What seems to be the problem with your Kossel? Pleas share it with us. I bet I will be able to learn something from it.

calibration seem to be off been pulling hair now still can't get my end effector to run parallel, weird thing is it was working fine before now no matter what I tweak on the firmware side it just refuse to work more tinkering need to be done

Are you using nylon lines or GT2 belt? Nylon lines may slip when there is sudden motor movement.

I use GT2 belt

Then you might want to double check the belt tension and make sure its not too tight or loose. Also, the belt tension have to be almost the same.