[hoss2006]

Thanks, I'll try those settings on the next parts.
Hoss

[Whizbang]

yep, if thats not fixing it your next steps would be speed and layer height. if those previous settings dont help at all gradually move back to yours and see if there is any improvement. if not they you need to got higher in the temps etc.

[Don-in-Japan]

I'm always interested in trying new toys. Just wondering what overhang is allowable... or if the program automatically prints supports for parts with none.

[Whizbang]

you can configure it either way. if you have a small layer height then you don't really need support. but if it is like a 3d table you can allow support given the software you are using to slice supports support structure.
sorry I kind of feel like im hijacking this thread, this is Hoss's after all if anyone has any questions just pm me or make sure it's ok for me to answer here.

[hoss2006]

Answer away, any advice you can give someone else here all goes to my education too.
I'll have to try the new settings tomorrow, going to bed when the part running is finished.
Thanks, Hoss

[Don-in-Japan]

That is great.. I'm just envisioning (dreaming) of a large scale machine able to whip out a 20ft. boat

[Whizbang]

Alright, Thanks Hoss. Also for what it is worth I have learned a bunch from you. I think I have read your entire site hossmachine.info. It has been a great read with a lot of very helpful knowledge. It was the first site I really started reading once I realized that my cnc router wasn't really what I was looking for and decided I wanted a full machine. You currently have the two machines I am very interested in the Grizzly 704 and the rf-45 ( I am very interested in the MTW) for the large table. Any way I would love to be able to give some knowledge and suggestions back in the form of help, for all the help and knowledge you have given to this community.

[Khalid]

Hoss Nice part, and you used the full bed to make that one..How long it took to complete?

[arizonavideo]

Great job as always Hoss,

On a part like the filament spool stand it looks like you could mill those parts out of PVC or something but you would, like many parts, wast most of the material.

Their must be a fairly large material cost advantage to just printing the material needed

In the long run stock cost really does add up.

What do you think the cost advantage is between making a part like that printing -V -milling?

I'm in on the printer idea just need to fine some space and time and something to make... Just need to get this extra G0704 moving along.
.

[RomanLini]

...
What do you think the cost advantage is between making a part like that printing -V -milling?
...

I've been wondering that too. Maybe we could compare the weight of a reel of plastic wire and its cost, to the weight of a piece of flat plastic and its cost?

I would expect the wire to cost more per kg but there are obvious material savings in the printing of course.

Another saving is the ability to print hollow parts, or semi-hollow parts ie with internal struts or honeycomb.

Did someone mention what the max (unsupported) overhang angle is?

[hoss2006]

I've been wondering that too. Maybe we could compare the weight of a reel of plastic wire and its cost, to the weight of a piece of flat plastic and its cost?

I would expect the wire to cost more per kg but there are obvious material savings in the printing of course.

Another saving is the ability to print hollow parts, or semi-hollow parts ie with internal struts or honeycomb.

Did someone mention what the max (unsupported) overhang angle is?

I figured the 1 lb spool of PLA has about 260+ feet of filament.
The support I made used a little under 10' to make it so about 55 cents per part.
Took 65 minutes to make it but I've only been at this a few days.
I'm sure the amount of filament used could be lowered ( I'm using 25% fill, rectilinear) and the time to make it
could be lowered( I'm running about 50mm/sec)
Sure a simple part like I made could be milled out but think about trying to mill something like these parts.


Check out the parts made on thingiverse.com for a look at what these can do.
Hoss

[Starnovice]

Of the different types of plastic available, does anyone know which ones would provide the must structural rigidity? Like for the parts hoss is currently making?

[Whizbang]

pla is very rigid but brittle. abs on the other hand is very strong provided the right infill plus it is a little ductile so it wont break it also withstands heat well.
i have built all of my 3d printers for personal use as well as the ones i sell from abs in my eyes abs is far superior.

[Starnovice]

pla is very rigid but brittle. abs on the other hand is very strong provided the right infill plus it is a little ductile so it wont break it also withstands heat well.
i have built all of my 3d printers for personal use as well as the ones i sell from abs in my eyes abs is far superior.

thanks Whizbang!

[Fastest1]

You already know how to mill. This an additional tool for the toolbox! I am sure the little wheels upstairs are already thinking of ways to improve the results!

[hoss2006]

Yeah it skims across the threaded rod, I wrapped it with some Kapton tape so it's a little smoother.
Trying ABS for the first time, can't quite get the hotend much over 200 with the bed on too so I'm gonna get a new PS.
Still extrudes at 199 though it looks a little thick.
Hoss

[Whizbang]

Hoss, 195 to 205 is the perfect temp for abs with the bed at approx 110 to 115 if you desire higher temps from your extruder increasing your psu really may not be the answer assuming it is 300watts at least. Try wrapping you hot end with a few layers of kapton tape and make sure its good and insulated that will keep the heat in better and raise your temps. also make sure your thermistor is touching before you wrap the hotend with the kapton.

[hoss2006]

Yeah I tried 205 but with the bed on it just couldn't get there, with the bed off it had no problem going over 220.
And the best I could get from the bed is 90.
Have a 30 amp psu on the way.
I have the j-head wrapped in Kapton, was going to get some ptfe tape to try and keep the heat in better
plus keep the fan from cooling it down though I haven't been using it for these parts.
Lots of little things to learn to get it just right.
Thanks, hoss

[Whizbang]

Hoss it sounds like you are heading in the right direction, I know that J-heads can be a little tricky, I had one but have since put MG extruders on all my machines ( just preference). Printing is a lot like milling you learn temps and speeds like feeds and speeds. We are currently doing the opposites. I am learning milling and deciding on the proper machine and you are learning all the little things of 3d printing. I can assure you, you will be glad once you get it it is truly the way of future manufacturing.

[Mad Welder]

Holy mother of God Hoss you're on post 216 on a new thread...aaaaaaaaargh my brain is melting at the thought of trying to read it all