3d printer

[GSRCRXsi]

get the Y fixed yet?

 

[awptickes]

Y was never the issue. I forget what it was...

Now I'm having issues with the filament feeding correctly, it keeps jamming up because it's too soft, but heating it a little bit longer in the oven (at roughly 375) should.

 

[awptickes]

Yep, so it's not jamming because it's too soft, it's jamming because the extruder has a 4mm hole for the 1.75mm filament. Just ordered a few different filaments to try, and some parts to try to fix it enough so I can print a new extruder body. I think I'm going to sleeve the hole in the extruder body with some PTFE tubing, and hopefully it'll give me some more longevity.

Also, I'm seeing a bit of jitter on the belted axis, but that's because I don't have the belts tight enough yet. Supposedly I'm supposed to be able to play a bass note on each belt.

Doing a lot of research about HCN, CO, and other emisisons in melted thermoplastics, it's a nominal risk, even in a large-quantity industrial setting. The guidance given to employees who work in extrusion plants is "wash your hands" and "don't eat the plastic." Sound advice for anyonedoing anything near chemicals, lol. I have a CO detector sitting right next to my printer, and in about 40m of filament, it hasn't gone off once.

I think I fixed the overhang issue by adding a fan and lowering the extrusion temperature.

 

[klyph]

Is your printer big enough to print ITBs?

 

[awptickes]

It should be. What size did you have in mind?

Max for my printer:
190mm X
130mm Y
115mm Z

Not nearly the 8^3" I was hoping for, but I can use this one to build the parts to make one that big. Next time I'm going to be using the Rostock RepRap designs.

 

[klyph]

I'm definitely gonna let you science this one out and learn from your mistakes.

 

[awptickes]

What kind of ITBs did you want? I'll see if I can make them.

 

[double0Si]

for sbc

 

[awptickes]

I don't think you understand how this works, lol. I need measurements before I can draft up anything...

 

[double0Si]

No I know. Haha I wouldn't expect anything like that. Just dreamin. :\

 

[klyph]

Don't we have Honda employees that can get you catia models of CBR1000 ITBs?

 

[awptickes]

I'd love to get some of the honda models. I could scale them and whip them out in a couple hours.

 

[Matts96HB]

GrabCAD doesn't have anything even close

 

[awptickes]

Well, what do you have? I can probably convert it. I'm just running it through a slicer.

 

[awptickes]

Just printed a case for my Nexus 4. ABS is too stiff to use for a phone case, I'll try nylon in a bit, after I print the other stuff queued up.

 

[Matts96HB]

Is there any noticeable deformation so far? I know with the printers we use at school we automatically scale up by 10% or so just to get remotely close to the desired dimensions.

 

[TurboMirage]

photos!!

 

[awptickes]

It was small for my phone. Probably 1mm too small. I'll probably reprint it sometime.

I'll get some pics soon. Now that I know it'll do what it's supposed to, I'm going to be printing the wear parts for my printer in case something breaks.

 

[awptickes]

Stuff works amazingly now. I discovered that I needed to print with a much lower layer-height, and now after some research, I discovered the math to calculate this:

Best Layer Heights: 0.399, 0.319, 0.255, 0.249, 0.199, 0.099, 0.049

Meaning, I can print in 50 micron layers, and as small as 12.5 micron with 100% dimensional accuracy. Supposedly, I can print in 6.25 microns on Z, but 22.5 on X and y.

unfortunately, if I do print that, it'll take YEARS to print something usable, lol.

 

[Matts96HB]

That's pretty impressive, especially for a home-built printer.

Question, are you filling each layer 100%?