It looks like operation z-wobble removal is a success! I printed out a tall, thin…

It looks like operation z-wobble removal is a success! I printed out a tall, thin print with what’s left of my white to test the fix. http://www.thingiverse.com/thing:28690

As you can see, it’s MUCH better than it used to be. I had some issues that I think are thermal in nature as there are a few layers that didn’t bond well.

I blame http://www.thingiverse.com/thing:20147 for the dramatic improvement on my printer.

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Printing a cell phone battery holder I designed as a test print.


Looks pretty good.


I have some very fine lines, but they appear to be layer lines and not z wobble lines.


There was a week layer. Not sure if the printer z-lifted and didn’t settle back down or if I had a cool layer and it didn’t bond well.


Annoying how I can only do 4 photos at a time.

Step 1) buy the cheapest fan in the store

Step 2) go to another store. Find fan you like much better. Buy that one.
Step 3) hang fan most of the way.
Step 4) dig up set of 50 inch replacement blades a friend gave me years ago.
Step 5) mod blades to fit 42 inch fan brackets
Step 6) finish hanging fan
Step 7) take nap under new, larger fan
Step 8) social medias
Step 9) return first fan
Step 10) profit???

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Drilling out new holes to mount these longer blades onto the fan brackets.


The blades that came with the fan on the left, my replacement blades on the right.


I am a big fan of my new fan.

I printed some z wobble minimisers and installed them tonight

http://www.thingiverse.com/thing:20147

I had to leave half way through the print, so I paused the job and powered down the heaters. The print finished ok when i powered the heaters back up, leaving a big blob where the nozzle had sat. Need to lift the nozzle off of the part or something. Last time I tried that though, there was too much ooze and it took a couple of layers before it caught up so the print ended up failing.

I bored out the inside of the z carriages so the rods would no longer push against them. This means that the springs no longer work as they slide past the carriage now.

There are now upper fixed height nuts. The left side isn’t quite snug. If I had been quicker thinking, i would have spun the nut in the captured socket so it meshed with the lower one better. I will shim it with paper instead.

The thick part means that the z limit switch never triggers. Combined with the fixed upper nuts, i drove the z into the bed hard before i hit the reset. I bet i bent my y rods in fixing my z rods!

By the time i get this printer figured out, i am going to need to build a new one as i’d have wrecked this one.

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4 z wobble isolators getting printed.


There is a big blob from turning the printer off and back on. I’d picked a spot in the infil, but it still buggered up around the edge.


Drilling out inside the bracket so the bend Z rod doesn’t touch the carriage.


The isolator sits under the Z carriage.

Trying to pause printing so i can leave the house

Turned the heat off in pronterface and then flipped off the power supply.

Anybody have any luck doing this?

I am printing z wobble isolators with the last of my white PLA and don’t have enough to start over with.

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Shut the printer off at this point. Waiting to see how it works out…


Not much filament left.

I cut some PCB boards for a friend of mine tonight < http://dev.telynishiya.info/?p=63…

I cut some PCB boards for a friend of mine tonight < http://dev.telynishiya.info/?p=63 >. The little band saw made quick work of them. I viced my belt sander and cleaned up the cuts so the boards look really good.

Here are some photos from my 3d camera – you can look at 'em cross eyed if you want to see the boards in 3d.

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2 piles of cut and sanded boards. That board dust is very fine when sanded and almost feels like soap.

Cutting the boards on the band saw.

I love running my belt sander like this. Makes it really nice to grind things.

Some nice clean edged boards. The dust mask is pretty important.

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