the wheels were the best part of the Sintron kit, and I did re-use them on a different kit build as they were better than what that kit had.
I am not sure what the push rod dimensions are and I no longer have those parts to measure them, sorry. This thread is over a year old, so please keep that in mind... the unused parts from the Sintron were "disposed" of long ago. I only kept a few things from that kit - the wheels, the motors and the heatbed, everything else is gone

Thanks for any help.

I finally have the Sintron Delta working, could not get it to run under Pronterface but found that Repetier works really well with Marlin Firmware. had to change the power unit as the table seemed to take forever to get hot, so got a 400 watt power supply which should have made a difference.  I can get enough heat for PLA but not ABS, with ABS the extruder and heated bed get up to 240 and 105 degrees respectively but over time the bed temperature drops to 90 deg and the printed parts fall off. Are there settings in firmware that can be tweaked (PID, PWM)? have checked settings in Marlin and no problems there for PLA and ABS settings, is it the heated bed?  Any good advice out there?

Thats only 33 amps and most likely a Chinese supply that cant really do its tated output at full load. I used a 75 amp converted server supply on mine like the use to run radio controlled car battery chargers. This gives me ample power to even add an overhead 3 watt LED spotlight.

Finally got the endstops to work, the towers are XYZ counting from the front left and  going anti-clock around the base. Then the motors are in logical connection sequence of XYZ as per the pin connectors on the RAMPS 1.4 BUT the endstops connect in sequence of XZY onto their pins, the yellow wire is on the signal (S) line, the black is on the common line and red is on the bottom + line (Sintron told me early on that I only need to connect 2 wires as the yellow was not required! ).

Now the problem is calibration, have set the Z height in Marlin, set up the XYZ and Home buttons in Pronterface, all good so far. Changed the build dimensions and offsets in Pronterface so now I can see my print job right in the middle of the hot bed graphic in Pronterface so assumed all would be go. No.

Bed and Extruder hotend warmup well, hit the print tab and the hotend shoots out the side of the bed as far as it can go then tries to crash through the hot bed. Not good!

I have tried every offset, distance, height in Marlin and Pronterface and still get the same result. Is there an EEPROM somewhere to change or is something else going on here? All good advise appreciated.

In your firmware there is an option to enable a virtual EEPROM. If that si enabled then what ever settings you originally booted with will be stored in it and no matter what changes you make in the firmware they will be ignored and the settings in the EEPROM will be used. You need to make sure the EEPROM option is disabled until you get all your settings and tweaks right. Then you can enable it so that those correct settings get stored at the next power cycle. The settings below are what you are looking for..

// EEPROM
// The microcontroller can store settings in the EEPROM, e.g. max velocity...
// M500 - stores parameters in EEPROM
// M501 - reads parameters from EEPROM (if you need reset them after you changed them temporarily).
// M502 - reverts to the default "factory settings".  You still need to store them in EEPROM afterwards if you want to.
//define this to enable EEPROM support
//#define EEPROM_SETTINGS
//to disable EEPROM Serial responses and decrease program space by ~1700 byte: comment this out:
// please keep turned on if you can.
//#define EEPROM_CHITCHAT

This is near the bottom of the configuration.h tab just before you get to the LCD options and should look like the above to be disabled. Once you get your settings right and confirmed it can be enabled and should look like this below.

// EEPROM
// The microcontroller can store settings in the EEPROM, e.g. max velocity...
// M500 - stores parameters in EEPROM
// M501 - reads parameters from EEPROM (if you need reset them after you changed them temporarily).
// M502 - reverts to the default "factory settings".  You still need to store them in EEPROM afterwards if you want to.
//define this to enable EEPROM support
#define EEPROM_SETTINGS
//to disable EEPROM Serial responses and decrease program space by ~1700 byte: comment this out:
// please keep turned on if you can.
/#define EEPROM_CHITCHAT

Now the problem is calibration, have set the Z height in Marlin, set up the XYZ and Home buttons in Pronterface, all good so far. Changed the build dimensions and offsets in Pronterface so now I can see my print job right in the middle of the hot bed graphic in Pronterface so assumed all would be go. No.

Bed and Extruder hotend warmup well, hit the print tab and the hotend shoots out the side of the bed as far as it can go then tries to crash through the hot bed. Not good!

I have tried every offset, distance, height in Marlin and Pronterface and still get the same result. Is there an EEPROM somewhere to change or is something else going on here? All good advise appreciated.

I dont use pronterface, so have no idea how that is set up.

for the firmware, maybe try downloading FolgerTech's Rev B kossel firmware, enter your dimensions and try it - bearing in mind that the FT kossel is a fair bit larger than the Sintron.

Anyone tell me why the Sintron Delta thinks that Z0, Y0 and X0 is out side of the hotbed and not in the middle?? Every time I try to print a job it goes outside of the hotbed to start. Any clues??

Your slicer is configured for a square printer maybe?

I upgraded to an inductive sensor which acts exactly like the z probe (as long as you buy the version with the orange cap), but it doesn't touch the bed. I highly recommend it as a $2 fix to the crappy probe provided.
Here is what I could get (I don't have access to the printer at this moment):

I have the FT Mini Kossel which uses a RAMPS and The same endstops.. Mine where connected to MAX ports, not the min ports as you currently have it.

In a delta it is backwards in logic from a regular box or Cartesian printer. It homes at MAX and then moves down to ZERO to start a print.. That is why the Z probe is connected to Z min as you would want it to trigger at the bottom on the print bed.

zakattacks wrote:

I upgraded to an inductive sensor which acts exactly like the z probe (as long as you buy the version with the orange cap), but it doesn't touch the bed. I highly recommend it as a $2 fix to the crappy probe provided.
Here is what I could get (I don't have access to the printer at this moment):

So where do the Z probe wires connect?

It is usually the Z min endstop port. One of the three unused ports in that image..

I upgraded to an inductive sensor which acts exactly like the z probe (as long as you buy the version with the orange cap), but it doesn't touch the bed. I highly recommend it as a $2 fix to the crappy probe provided.
Here is what I could get (I don't have access to the printer at this moment):

So where do the Z probe wires connect?