Search found 346 matches

by zemlin
Tue Aug 14, 2018 12:34 pm
Forum: Hardware
Topic: New simple printing head
Replies: 2
Views: 37

Re: New simple printing head

Do you have suggestions for a design improvement, or are you just venting?
by zemlin
Mon Aug 13, 2018 12:41 pm
Forum: Hardware
Topic: Temperature control in the N2(+) enclosure
Replies: 11
Views: 614

Re: Temperature control in the N2(+) enclosure

hardbc wrote:Can you please tell me what have you used for cutting the plexiglass?

Thanks a lot!


I'm using a 2-flute 1/8" diameter endmill with an 1/8" shank to fit into the Dremel.

https://www.mcmaster.com/#8876a13/=1e4yl4i
by zemlin
Sat Aug 11, 2018 2:05 am
Forum: User's Gallery
Topic: Bracket/Fix for N2 Rotating Z-Axis Ball Nuts
Replies: 12
Views: 500

Re: Bracket/Fix for N2 Rotating Z-Axis Ball Nuts

The ball nuts are not bolted tight to the print bed. The bolts are loose to prevent any binding that might occur due to minor misalignment of the linear motion bearings, rods, and the ball screws. The combination of the loose bolts and play in the holes means that the ball nuts are free to rotate se...
by zemlin
Fri Aug 10, 2018 2:49 pm
Forum: User's Gallery
Topic: Bracket/Fix for N2 Rotating Z-Axis Ball Nuts
Replies: 12
Views: 500

Re: Bracket/Fix for N2 Rotating Z-Axis Ball Nuts

DrExcess wrote:Wow thanks for these.

Glad they worked out well for you.
by zemlin
Sat Aug 04, 2018 6:13 am
Forum: Others
Topic: Can't place order from out of the country
Replies: 2
Views: 61

Re: Can't place order from out of the country

Thanks, but I'll be back in the US on Wednesday. I'll just place the order then. It's nothing I need in a hurry.
by zemlin
Fri Aug 03, 2018 3:06 am
Forum: Others
Topic: Can't place order from out of the country
Replies: 2
Views: 61

Can't place order from out of the country

I live in the US and am currently traveling in Asia. I was going to pre-order some boots and a couple other parts. The web site keeps throwing me over to the .asia site where I don't have an account. I have tried 4 different web browsers and all behave the same. As soon as I click on the https://www...
by zemlin
Tue Jul 24, 2018 6:54 pm
Forum: Feature requests, ideas, wishes
Topic: Raft Alignment
Replies: 5
Views: 157

Re: Raft Alignment

I'm guessing that if you rotated you build plate 180 degrees that the raft would be building in a new area. That gets you 2x the life.
by zemlin
Tue Jul 24, 2018 1:58 am
Forum: Others
Topic: Drying filament under vacuum
Replies: 15
Views: 398

Re: Drying filament under vacuum

I work for a major manufacturer of high-end vacuum equipment. There are several types of dry pumps which use no oil, but they are far more expensive than what I'm using. What I've seen equipment to separate the water from from the vacuum line is also very expensive, so I don't plan to go there. Deal...
by zemlin
Mon Jul 23, 2018 2:38 am
Forum: Others
Topic: Drying filament under vacuum
Replies: 15
Views: 398

Re: Drying filament under vacuum

I dug through the filament archives and found a neglected spool of Taulman 910. It had been stored in a bag with silica gel, but the humidity indicator in the bag showed at least 50% RH. I weighed this spool on my cheapo scale with .1g resolution (but also a bit of hysteresis, so it's not perfect) a...
by zemlin
Mon Jul 23, 2018 12:20 am
Forum: Software
Topic: Spiral Vase - Sphere Printing
Replies: 6
Views: 169

Re: Spiral Vase - Sphere Printing

To fill in the gaps, the machine would need to be printing concentric rings with almost zero change in the Z dimension. FDM printing won't print unsupported material like that. Gravity will win that battle. You can get to about a 45 degree overhang with vase mode - or might be able to get up to 60 d...
by zemlin
Sun Jul 22, 2018 12:08 pm
Forum: Others
Topic: Drying filament under vacuum
Replies: 15
Views: 398

Re: Drying filament under vacuum

That last batch of 4 spools and a bunch of silica gel ended up running for about 48 hours before the desiccant turned blue. I exchanged oil in the pump twice during the run and again when it was finished. I froze the water out of the oil and collected about 4oz of water (~120ml). I poured the oil th...
by zemlin
Sun Jul 22, 2018 1:59 am
Forum: Hardware
Topic: Temperature control in the N2(+) enclosure
Replies: 11
Views: 614

Re: Temperature control in the N2(+) enclosure

Here are STL files for the fan hole fixture, the dremel guide for the 80mm fan hole, and the heat trap.
by zemlin
Sun Jul 22, 2018 1:20 am
Forum: Hardware
Topic: Temperature control in the N2(+) enclosure
Replies: 11
Views: 614

Re: Temperature control in the N2(+) enclosure

Here a fan is in place inside the top cover. IMG_1308.JPG Here is the "heat trap" I'll be mounting on the outside. This will limit convection through the cabinet because the hot air inside the cabinet needs to be forced down by the fan to exit the trap. If the fan isn't running, hot air wi...
by zemlin
Sun Jul 22, 2018 1:14 am
Forum: Hardware
Topic: Temperature control in the N2(+) enclosure
Replies: 11
Views: 614

Re: Temperature control in the N2(+) enclosure

I finally got some time to do some of the work on this. Tonight I installed the exhaust fans in the top cover. These will be controlled by the temperature controller when it calls for cooling. I made two fixtures for cutting the fan holes and opening. The first is just a block with a hole pattern to...
by zemlin
Fri Jul 20, 2018 6:52 pm
Forum: Feature requests, ideas, wishes
Topic: Pro Upgrade Kit
Replies: 17
Views: 627

Re: Pro Upgrade Kit

firesped wrote:I wonder though, is raise3d going to give a better deal then just buying direct from bondtech for those parts?

If their buildtak pricing is any indication ...
by zemlin
Thu Jul 19, 2018 3:58 pm
Forum: Others
Topic: Drying filament under vacuum
Replies: 15
Views: 398

Re: Drying filament under vacuum

This is why I pull a vacuum, shut off the valve and turn off the pump. I can hold my vacuum over night without the pump running. Dessicant is loose along the bottom of the chamber. You can get big jugs of dessicant on Amazon. I dont have these "water" problems. Also, perhaps its dryer her...
by zemlin
Thu Jul 19, 2018 12:19 pm
Forum: Others
Topic: Drying filament under vacuum
Replies: 15
Views: 398

Re: Drying filament under vacuum

Last night I loaded up the vacuum chamber with 4 spools of PC and Nylon filaments, and tossed a big pile of desiccant packets in as well. I started the pump and checked on it this morning after about 8 hours of operation. The oil level in the pump had risen to the very top of the sight glass, so I s...

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