1

I’ve been using the QIDI Tech 1 for about 2 weeks now. My dual extrusion prints have been not that great. I’ve printed a couple of the 2 color frogs from thingiverse. They mostly look good but around the top of the legs, the ooze shield (using simplify3D) and it seems to fail and cause stringing and oozing in my prints. Not sure if it’s settings or what. I’m also having and issue with the right extruder jamming with PLA. it’s clogged 3 times so far. Is this a common issue? Other than that, I love this printer. It came with a messed up side door panel, but the customer service was quick to send me out a replacement and nozzles. The single extruder prints come out great.

2

For the dual extrusion questions I would go over to S3D and look through the forums. Lots of info there.

As far as the jamming. What temps, speeds etc.? Is it jamming on the dual extrusion prints?

3

Yes. I only use the right got dual extrusion. And the past 2 times it’s jammed part way into the print. I’m printing play at 205c for regular. Extrusion multiplier is at 0.9. Speeds are usually 50mm/s-60mm/s depending.

4

I would suggest slowing down a bunch. It can always help.

Also look at the retraction settings that they aren’t to aggressive. It sounds like it could be a bit of heat creep causing the jamming.

5

I think it’s a bit of heat creep as well. I do have a question about the fans. on the extruders. One has the sticker facing out and the other has it facing in. Is it is supposed to be like that? It just seems weird to me. What retraction settings would be suggested? I think I’m using 3mm @ 30mm/s. I still get strings though. I can probably turn my printing heat down as well. I haven’t experimented too much with that yet.

6

I believe the fans blow into the heat sinks so stickers not showing. I can check mine when I get home. That definitely could be an issue!

I might start with 1.2mm and 1800mm/min. With the fan the wrong way that may fix your problem on jamming and I think with both extruders going the heat creep will be more likely due to the heat being developed.

Reducing stringing can also be helped by lower temps. I have found on some material and colors that a 5 degree reduction made a big difference. Some colors and brands just string more than others.

So, get the fans going the right way and so how it does for jams. Get the jams solved first! Then on to stringing.

7

If you are using High Resolution try Standard. that worked for me.

8

Curtis, I can sure use your help. I am fairly new with 3d printing. I have a Qidi Tech I. It worked fine for a while, but now it jambs part way through the print, and for the life of me i cannot figure why>

9

Curtis, I can sure use your help. I am fairly new with 3d printing. I have a Qidi Tech I. It worked fine for a while, but now it jambs part way through the print, and for the life of me i cannot figure why>

10

By “jams” do you mean that the filament gets stuck and will not feed?

Make sure that your teflon tube is in the extruder. And check the feed wheel.

The filament will leave fragments on the grooves of the feed wheel and then it will not feed.

One other thing might be that the extruder is not hot enough and the filament is too cool to feed through the extruder nozzle.

Just check everything, clean everything and try again. By using it you will acquire the experience to know what is happening and be able to solve any problem.

And if you find it a different problem than these suggestions I have mentioned, let all of us know what you have discovered.

11

I figured out the Jamming. One part was a fan being on backwards, the next was me figuring out the proper way to remove the filament. I’m just having issues with retraction now. I got the the stringing to be very fine but still there. I’m printing PLA at 195-200 depending on the filament. On the flip side, with ABS, I had no stringing with my current settings. I just need to sit down some night soon and go at it until I get it right.

12

Hello Gripp,

Good job of trouble shooting.

That is the only way we can learn to be a pro at filament 3D printing.

I have used a few of those SLA 3D printers.

The XYZ is too temperamental. When I changed the resin it quit working.

Had the printer replace and it would not work at all. Neither would the third one.

I also have a Ez3D, and it vaporizes the filament. I found the “G-Code” for the temp control and fixed it.

But the Ez3D has the counter weights, and there was always too much play in it.

13

Some PLA’s and some colors just string more than others! I found on one I was using that 195 to 190 made a big difference in the stringing. So a 5 degree change was all it took. Completely different for others!

A hair dryer or smaller heat gun is great for zapping away “strings” and other fuzz on a finished print. Just don’t melt the print.

14

Chris, I took my time and studied S3D. it still prints partially and stops