SD Press - Under the Kimono (Page 4 of 12)

With Stepper on Width > http://public.mlabs.us/ZZ11A9DF3A.jpg
Witdh > http://public.mlabs.us/ZZ118F0DD8.jpg
Height > http://public.mlabs.us/ZZ2A50F421.jpg
Depth > http://public.mlabs.us/ZZ58D0667B.jpg

Looks like the stepper mount is held in with two screws from the top and one from the bottom. And the Probe is held on directly to the carriage .

If you need specifics let me know. I'll leave the extruder disassembled for a bit (Since I can't print anything with it anyways)

And while I have it apart.

Extruder Stepper

http://public.mlabs.us/ZZ51F8645B.jpg
http://public.mlabs.us/ZZ71385871.jpg

Hotend

http://public.mlabs.us/ZZ77F4112B.jpg
http://public.mlabs.us/ZZ3689F8CE.jpg

In this photo:

http://public.mlabs.us/ZZ11A9DF3A.jpg

Is the front face of the metal bracket in the same plane as the the front face of the IM carriage, or is there an offset (if there is, what is it, and which sticks out more?) Looks planar in this photo:

http://public.mlabs.us/ZZ58D0667B.jpg

But I can't tell for sure.

If Solidoodle had drilled the 4th hole in that bracket this would be a slam dunk.

THANKS SOLIDOODLE

elmoret scroll up and look at the 'non-lazy' version. Better pictures and better measurements.

Yeah I saw those, thank you! The only thing I can't tell for sure is when that L-bracket is on the IM carriage, are the front faces of the bracket and the IM carriage in the same plane? If not, which one sticks out more?

Still not what I'm asking, sorry for communicating poorly.

Imagine the front face of the L bracket forms a plane, parallel to the XZ plane.
Imagine also the front face of the IM carriage forms a plane, also parallel to the XZ plane.

Are these two planes offset at all? If so, which sticks out more?

Said differently, if you screwed a credit card to the front face of the L bracket using those 3 holes, would it also touch the front face of the IM carriage, or would it be bent/would there be a gap?

Yup! So it looks like the front face of the L bracket sticks out about 3mm further than the front face of the IM carriage.

That's great news, it means if the L bracket was notched to get to the stepper's lower left hole, you could use a stock Lawsy MK5.

Sure, or just print a spacer plate that goes between the L-bracket and the IM carriage. I don't think you'd need more than 10mm or so. Could laser cut 2 of them at 6.35mm each.

There's about 73mm between the center of the stepper shaft and the tip of the nozzle on an E3Dv6/SD3. If you get a chance, could you measure the same distance on the press? It looks like about 60mm from the photos I've seen.

Hard to see from the angle of the pic - stepper shaft center to the tip of the nozzle is what, 50mm?

Might need more like 20mm of spacers. That's a fair bit, but still doable.

It looks like that spring should work like one in a clothespin.  I twist those springs all the time to make them grip better. 

If that spring tension really is the culprit, I would imagine it could be adjusted the same way.  You may need a couple pairs of pliers to do it, but twist it until it changes the angle of the spring arms when back at rest.  A larger angle will result in more pressure on the filament, a smaller one will give less pressure. 

It would help to measure the angle somehow before you begin so you can tell when it changes.

Like you, my spring popped out when I disassembled things to tighten that damn set screw because I didn't find the hole on the left side like you eventually did.

Unlike you, I wasn't able to get the spring back on (yet...  I've seen a guide video now so I could probably do it).

I've been using a doubled-over rubber band over the lever and run down to a nub of plastic on the side of the assembly to put tension on that piece.  In that regard, it's tension is adjustable.     Looks bad though, and I dunno if the warmth inside there would ever cause the rubber band to fail when printing.  If so it would just lose tension and it would likely stop extruding.

Even with my jury-rigging I still get the issue you're seeing... it will print for an hour or so then just stop extruding and print thin air.  I have two half-printed Pikachu's that look quite nice.  Like everyone else my wheel is grinding up the filament.  When I get a clog I've been having to clear it with a piece of solid core copper wire jabbed down in the hole...  I don't really like doing that though, I'm afraid it might cause some damage.

Would really like to get things cleared up to where I can get a full print without extruding stopping...