Search found 107 matches

by doctorgonzo
Wed Apr 22, 2015 1:10 pm
Forum: What are YOU making?
Topic: Building a new printer - Karbon Kossel PRO
Replies: 36
Views: 8449

Re: Building a new printer - Karbon Kossel PRO

I got a bad stepper from Sparkfun so first moves are going to have to wait.
by doctorgonzo
Wed Apr 22, 2015 1:08 pm
Forum: Alligator Board
Topic: Roll Call!
Replies: 0
Views: 1295

Roll Call!

Anybody else here get one of these? I'm putting one in my new Kossel build, which you can follow here:

viewtopic.php?f=41&t=7922
by doctorgonzo
Wed Apr 22, 2015 1:07 pm
Forum: Alligator Board
Topic: Firmware, Arduino IDE files
Replies: 1
Views: 1296

Firmware, Arduino IDE files

Putting these in a central location:

Arduino IDE variant for Alligator:

https://github.com/3Dartists/Alligator-Arduino-variant

Repetier Firmware:

https://github.com/3Dartists/Alligator- ... r-Firmware
by doctorgonzo
Wed Apr 22, 2015 10:32 am
Forum: What are YOU making?
Topic: 3D Laser scanner DIY.
Replies: 3
Views: 968

Re: 3D Laser scanner DIY.

Wow that's awesome! I really want to build a bigger version of this in order to scan yacht floor plans. I'm using a big, bulky CMM now (A ProDim Proliner) and its limitations are showing.

Does the scan have accurate dimensions, or is it just a point cloud that must be scaled to a chosen size?

Chris
by doctorgonzo
Tue Apr 21, 2015 12:48 pm
Forum: General Tips 'N Tricks
Topic: 39 cm hight print
Replies: 7
Views: 926

Re: 39 cm hight print

It was a prototype for a black powder rifle made by a major manufacturer here in Atlanta. They used it to verify ergonomics, and as a trade show prop. It was never fired, never intended to be. That one job payed for the printer and then some. Back on topic, is there a way you can print the part layi...
by doctorgonzo
Tue Apr 21, 2015 12:26 pm
Forum: What are YOU making?
Topic: Building a new printer - Karbon Kossel PRO
Replies: 36
Views: 8449

Re: Building a new printer - Karbon Kossel PRO

Generic, I have some of the drilled and tapped ball bearings, M4 thread. I will probably swap over to these, as I'm not a fan of the bearing/socket head/JB weld arrangement. The drilled and tapped bearings are slightly bigger than 3/8, I think they're 10mm. Slight adjustment to firmware but no big d...
by doctorgonzo
Tue Apr 21, 2015 11:56 am
Forum: General Tips 'N Tricks
Topic: 39 cm hight print
Replies: 7
Views: 926

Re: 39 cm hight print

Aspect ratio of the part also plays a huge roll, by which I mean how tall it is compared to how skinny it is. You have a crazy aspect ratio! If the part is tall and skinny, it won't have much surface area holding it to the print bed. As the part gets taller, any force the nozzle applies to the print...
by doctorgonzo
Mon Apr 20, 2015 10:58 am
Forum: General Tips 'N Tricks
Topic: PEI print bed surface experiments
Replies: 969
Views: 128365

Re: PEI print bed surface experiments

I went ahead and made up a second one with the "Windex trick", using the .030" material from Amazon, matte side up. I CNC'd the circle on my mill. This glass has PEI on one side, Kapton on the other. Looks like Kapton is "sooo last year" at this point, so it'll probably be c...
by doctorgonzo
Sun Apr 19, 2015 11:49 pm
Forum: What are YOU making?
Topic: Building a new printer - Karbon Kossel PRO
Replies: 36
Views: 8449

Re: Building a new printer - Karbon Kossel PRO

The pulley could have a slot cut into the middle Genius! Now, how to cut the slot? I have CNC...make a fixture and use a tiny end mill? Go to town with a cutoff wheel in a dremel? Hmm. Perhaps this is a situation that calls for a hack saw. It holds fine as is, as the tension of the belt keeps the t...
by doctorgonzo
Sun Apr 19, 2015 6:30 pm
Forum: What are YOU making?
Topic: Building a new printer - Karbon Kossel PRO
Replies: 36
Views: 8449

Re: Building a new printer - Karbon Kossel PRO

Alright, I got end stops wired and mounted. Made some 2mm carbon mounts for 'em: http://i.imgur.com/9aaCuuO.jpg I have an extra set if anybody wants them! I also finished the design on this printed doodad: http://i.imgur.com/AqvL4e4.jpg Here's the whole shebang, sorry for the pic. Hard to get the li...
by doctorgonzo
Sat Apr 18, 2015 12:59 pm
Forum: General Tips 'N Tricks
Topic: PEI print bed surface experiments
Replies: 969
Views: 128365

Re: PEI print bed surface experiments

Hey guys, I did something a little different when I installed my PEI sheet. I used a 12x12" piece of 468 tape, and I used the old sign maker's trick of floating it on Windex to aid installation. So, the procedure went like this: 1: Prep the glass with windex, then acetone. 2: Spray windex on th...
by doctorgonzo
Mon Apr 13, 2015 11:34 am
Forum: What are YOU making?
Topic: Building a new printer - Karbon Kossel PRO
Replies: 36
Views: 8449

Re: Building a new printer - Karbon Kossel PRO

OH $#!% it's here!

Image

:mrgreen:
by doctorgonzo
Sun Apr 12, 2015 9:52 pm
Forum: What are YOU making?
Topic: Building a new printer - Karbon Kossel PRO
Replies: 36
Views: 8449

Re: Building a new printer - Karbon Kossel PRO

My Alligator board shipped on Friday! Time to get serious about the mechanics on this thing. The only real parts remaining are end stop switch mounts (2mm carbon fiber) and the printed parts for the linear skates. The skate parts clamp and tension the belts, mount the ball bearings for the mag arms ...
by doctorgonzo
Wed Apr 08, 2015 4:37 pm
Forum: What are YOU making?
Topic: Building a new printer - Karbon Kossel PRO
Replies: 36
Views: 8449

Re: Building a new printer - Karbon Kossel PRO

You only need .04-.03" PEI, 1/8" is pretty overkill, and will probably promote a marginally higher heat gradient. Thanks Nylocke, I read some of the Amazon reviews and folks are saying the thicker stuff is nicer to work with. I'll try the .030 and maybe get a piece of .060 as well. Generi...
by doctorgonzo
Tue Apr 07, 2015 8:41 pm
Forum: What are YOU making?
Topic: Building a new printer - Karbon Kossel PRO
Replies: 36
Views: 8449

Re: Building a new printer - Karbon Kossel PRO

Thanks guys, Generic, I'm trying to keep everything that moves lightweight and stiff. I got some of this http://i.imgur.com/8gTdXUp.jpg It's from S and S Machine, 5/16x16ish, cast tooling plate. http://www.sandsmachine.com/alumweb.htm" onclick="window.open(this.href);return false; As far at the buil...
by doctorgonzo
Tue Apr 07, 2015 1:47 pm
Forum: What are YOU making?
Topic: Building a new printer - Karbon Kossel PRO
Replies: 36
Views: 8449

Re: Building a new printer - Karbon Kossel PRO

Thanks KAS. "Industrial" is what I was going for with the blackout treatment. Oh, and 10 interweb points to you for correctly identifying that engine bay. One of my all time favorite cars. Any ideas on a good material for the heated bed snowflake? Needs to be dimensionally stable at high t...
by doctorgonzo
Tue Apr 07, 2015 1:39 pm
Forum: What are YOU making?
Topic: 2x4 cnc
Replies: 11
Views: 1852

Re: 2x4 cnc

Looks good, are you going to keep it on the rolling toolbox? Seems like a great idea for a machine stand.

I especially like the printed drag chain.

Chris
by doctorgonzo
Fri Apr 03, 2015 6:25 pm
Forum: What are YOU making?
Topic: Building a new printer - Karbon Kossel PRO
Replies: 36
Views: 8449

Re: Building a new printer - Karbon Kossel PRO

You're welcome. To pepper this thread with technical terms: these feet are ginormous! I threaded the bottom center hole of my vertical extrusions and used a 1/4-20 x 1" screw to hold them on. Did a little assembly this afternoon...all of a sudden it went from a pile of parts to something resemb...
by doctorgonzo
Fri Apr 03, 2015 3:25 pm
Forum: What are YOU making?
Topic: Building a new printer - Karbon Kossel PRO
Replies: 36
Views: 8449

Re: Building a new printer - Karbon Kossel PRO

Got a new doodad. 100A should be enough? http://i.imgur.com/37vMsyN.jpg These guys are local to me and they are very friendly and professional. We are working on some interesting projects together for the 3D Printing community. More news to follow. I also ordered a Volcano from E3D. So I have a Prom...
by doctorgonzo
Wed Apr 01, 2015 3:26 pm
Forum: Show us your machine!
Topic: New addition to the shop - CNC Gantry Mill
Replies: 4
Views: 1705

Re: New addition to the shop - CNC Gantry Mill

Eagle, I will post pics as I go. I ordered 4 discs of MIC 6 aluminum from S and S Machine, here: http://www.sandsmachine.com/alumweb.htm" onclick="window.open(this.href);return false; Great price on stock. I'm going to turn at least one into a heat spreader, and cut another into adapter plates for g...
by doctorgonzo
Mon Mar 30, 2015 9:20 pm
Forum: What are YOU making?
Topic: Thruster motor for underwater AUV/ROV
Replies: 9
Views: 1848

Re: Thruster motor for underwater AUV/ROV

That's pretty cool!

Have you considered printing in ABS and smoothing with acetone vapor?

I would tighten up the clearance between the impeller and shroud as much as possible.
by doctorgonzo
Sun Mar 29, 2015 6:37 pm
Forum: What are YOU making?
Topic: Building a new printer - Karbon Kossel PRO
Replies: 36
Views: 8449

Re: Building a new printer - Karbon Kossel PRO

IF I were to offer a kit, this is what it would look like: http://i.imgur.com/VKRp8EN.jpg When I bought this box I swore I'd never fill it up. There I go lying to myself again. Few interesting developments - I just got a new mill for the home shop (all the previous milled parts were G-jobs at work) ...
by doctorgonzo
Sun Mar 29, 2015 6:01 pm
Forum: Show us your machine!
Topic: New addition to the shop - CNC Gantry Mill
Replies: 4
Views: 1705

New addition to the shop - CNC Gantry Mill

I have been scheming and planning to build a new gantry CNC for a couple of years now. I had a lovely 2x4 foot homebrewed jobbie when I lived in Colorado Springs, but I lost it and all my other worldly possessions in the Waldo Canyon wildfire of 2012. Such is life. I had my eye on an Openbeam OX or ...
by doctorgonzo
Mon Mar 23, 2015 5:04 pm
Forum: Heated Bed How-To's
Topic: Interesting power supply
Replies: 5
Views: 1212

Re: Interesting power supply

Jimustanguitar wrote:For all of your 24v welding needs...


I need to weld my ABS parts to the build plate, with less than an hour of warm-up time.

I ordered one of these just now, we'll see how it goes.

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