Heat Insert Issue with Printed Parts

[Roryhopcraft123]

***** SOLVED - wrong sized inserts *facepalm* *******

Hey All,

In just starting to put together the pieces for a Voron 0.2.

I have an Ender 3 V3 SE, in an enclosure with updated hot end. Printing ABS doesnt seem to be an issue. Calibrating the temperature and retraction, and using magigoo. Print quality looks good with no warping or layer issues.

Holes and measurements all seem fine… except… vertical holes for heat inserts…. The holes for inserts parallel to build plate are great its just the ones perpendicular. They are so big the heat insert just falls in and out!

I have adjusted expansion values and hole tolerances in Cura down too -0.3mm. No luck still too big! Flow, temperature and speed all seem ok too. 5 times ive tried to print the Drive Frame Upper and everyone - hole too big….

Any suggestions welcome! How do i get it to be the right size for the insert!

Cheers

 

[lord-carlos]

That is odd.
Are you sure it is actually the right hole for heatset inserts? And the right size heatset inserts?

 

[inree]

Hey All,

In just starting to put together the pieces for a Voron 0.2.

I have an Ender 3 V3 SE, in an enclosure with updated hot end. Printing ABS doesnt seem to be an issue. Calibrating the temperature and retraction, and using magigoo. Print quality looks good with no warping or layer issues.

Holes and measurements all seem fine… except… vertical holes for heat inserts…. The holes for inserts parallel to build plate are great its just the ones perpendicular. They are so big the heat insert just falls in and out!

I have adjusted expansion values and hole tolerances in Cura down too -0.3mm. No luck still too big! Flow, temperature and speed all seem ok too. 5 times ive tried to print the Drive Frame Upper and everyone - hole too big….

Any suggestions welcome! How do i get it to be the right size for the insert!

Cheers

When a printer is consistently off dimensionally it usually points to issues in the mechanical assembly somewhere rather than anything to do with slicer settings - as a general rule, you shouldn't have to modify the dimensions of any of the provided parts. I've never owned an ender 3, but from what I've heard, anything is possible with those. Gantry misalignment, belts, a lot of things can end up contributing to dimensionally inaccurate prints.

With that said, that specific heat set insert only holds one of the screws that secures the lid hinge onto the printer, so in the unlikely event that it's the only part that's dimensionally off, you can probably just use a heat set with a wider outer diameter. It's not critical to the structure of the printer. It's also relatively easy to access once the printer is built without disassembling it so you could always just reprint it on the finished machine and replace it later

 

[Roryhopcraft123]

Hey,

Thanks for the comments! Really helpful to give me an idea where to go next! Going a little mad, normally get good dimensions.

The heat insert comment was the one that got me! I thought “can I really be that stupid”… as it turns out yes i can! I grabbed my LDO kirigami bed kit and the heat insert included and low and behold… different size to mine. I ordered M3x5x4 (5mm long 4mm wide) not the correct 5mm wide 4mm long… the joys of a self source build and mislabeled ebay listings…

So, sometimes the simple thing is the right thing!

Thanks again for your help! Shows of the great community we have!