Wednesday, December 26, 2012

Finally a great update!

So I have been busy with the printer and we are up and running! I'm still in the calibration stages but moving along and making progress. It's not out of the box ready and some purchase but I feel I will get there soon enough. After my power supply arrived I was able to get thing rolling and feel I'm about 3/4 of the way there.   I am getting great layer height and the ABS is sticking well to the heated bed with Kapton tape on the glass. I'm trying to get rid of the buggers building up on the corners but with some help from the forum, I am going to work on that today. I found out that I have weak motors and that is one of the keys to success is motors that can handle the work load. I will shop around and when this next purchase is made, we be getting some good motors. I laxed on getting a BOM list going but I plan to do that very soon and put that up on the blog as soon as I can. As of right now, I believe I have about $500 in parts to build this machine. Its going to raise about $100 after I get new motors and possibly a new hot end. Sure I could have bought the whole kit but when money has to be used in small chunks rather than the whole ball, you do what you can do and take some of that wasted money on the chin and move ahead. Ok enough of that and enjoy some pics. I included some short video clips as well.

Here are some links that have helped me
www.reprap.org
Google Groups
www.lulzbot.com
www.makerstoolworks.com
www.thingiverse.com
Ebay seller - Plastic parts- 3dfactory
www.makerfarm.com
Filament - www.3dprinterstuff.com
Ebay Seller -Electronics - reprapdiscount



Here is the first Ramps 1.4 test that some have seen already. You can see it on youtube with a short explanation of what I did.



Hot End is built. I broke off some ceramic around the resistor and had to order a new one. It came with the 6 ohm version and I bought a 5.8 ohm one and it really heats up quick and the matching thermistor keeps the heat steady



Thermistor 100k


The elusive 12v 30 amp power supply


My rendition of a filament spool holder. I am going to print one up very soon!


Mr. Arduino hiding in the back. Once I get things at a somewhat production level I plan to make my housing complete with more space and fan supports.


And we have some crapola for first prints


But things are looking up! This is a calibration cube that came out not too bad and boosted my confidence.


And almost done with the second section.


And the final part was a little fragile and maybe a little too much heat/filament feed


This print was going good on another square/circle calibration print until the filament spool got hung up and sent it crazy across the bed


We are getting there day by day



The extruder doin' it!



And a couple shots of the unit as it is today. My ghetto rig spool holder had to be turned so the filament would roll better to the extruder.



ok 2 more video's
























Thursday, December 13, 2012

And waiting....

I'm just not happy with the hot end I purchased. I accidentally chipped the ceramic off the Heat resistor tightening the set screw. I barely snugged it!. So I have to purchase a new one. Plus I am not happy about having to use heat proof cement to help hold it in. I saw a video from someone and they don't recommend using anything in it in case it falls out. I should have shopped around some more instead of looking for the best /cheapest deal. I will take that one on the chin. I'm about ready to buy another power supply and return the one that hasn't shown up yet. I know it's coming from China, but when I bought it, they shipping from New Jersey... What are they sending it via rowboat for cripes sake!!!! I bought my electronics kit from Hong Kong and it was here in less than 4 days.. I'm just not a happy camper but things will get back to where they should be...........................................

Saturday, December 8, 2012

Still Waiting.....

If I would have known that the vendor I purchased my Hot End from didn't have any in stock, I would have bought somewhere else. Ok enough of this jibberish, I only have a couple pics to post as I am stuck without the Hot End.

Trying to keep the wires managable




Bad pic, sorry...   Thermistor attached with Kapton Tape


Used some heat shrink tube to finish off the connection wires



Wire bundle connected



Moves real nice with no strain on the connection...









Sunday, December 2, 2012

Motor wiring - 6 wires

You have to check the resistance on the motor to find the wire pairs you are going to use. I have six wires and will be using 4. There should be 3 wires per coil in the motor. Set your meter to Ohms and hold one wire on the probe and touch the end of the other wires to find the ones that are on one coil. Then just hold one wire and check the other 2 one at a time to see which pair has the highest resistance, that's the pair to use. Follow the same procedure on the other three wires to find the pair in those. Now you should have two pairs for the motor. Be sure to note the color of the pairs for each motor for later reference. Another way is to get the pairs that give the most resistance by putting 2 together and spinning the motor shaft. Start with no wires connected to see how freely the motor spins, then start pairing and spinning the motor. You will feel the difference in the 2 pairs versus the ones you will not be using.


This is a low resistance reading 


This is my high reading resistance number


I had to solder the motor wires to the connector.



 If you choose this route, don't forget to put a chunk of shrink tube on the wire before you solder!


And we solder to the end stop and complete with the shrink tube


I had a problem with the spring slipping thru the X axis carriage so I had to create my own hex washer! Worked pretty well and took about 5 minutes to make with that handy dremmel!






I'm using 3/8" flexible wire conduit on the harnesses. I like the way it looks and it was a bonus that it fits into the project box I have the Ramps/ Ardunio boards mounted in. I have to drill a few more holes for the 3/4" grommets because it just finished the look and I didn't prepare for it. We will change that tomorrow!

















It's Christmas Time!

So......
Things have been cooking here. I took the plunge and purchased the rest of my parts so I can get this bad boy fired up and rolling! What kicked off the buying spree was I saw an opportunity to buy the electronics kit for reprapdiscount on ebay. I was going for the Ultimate kit with the LCD display and all but soon realized I was getting pushed to the side from other bidders, fine. I started a different approach. I began making best offers to them but those were rejected. I decided I didn't need the LCD package and went for the next one down. They accepted my offer and I also purchased the MK2 heated bed. I paid on Tuesday and saw that my items shipped on Wed. Nov. 28th at 1:00pm HK time. I checked the tracking and it was in Memphis, TN the next evening at 11:00pm. I woke up Friday morning and it said it was on the truck for delivery by 10:30 am! I had to come home from work to accept it because it required a signature. 9:45 am CST it was at my door in the burbs of Chicago, WOW!





Here's a bunch of  pictures finishing up somethings because I was waiting for some parts.

Belt clips installed


Setting up the heated bed - change mount location to the middle hole by the resistor




Z Coupler installed but I have 5/16 rod because I ordered the wrong ones for my 1/4" Lead Screws


3mm bolts installed and no more temp cable ties!


And we have a X carriage tied in!