Formlabs 2 question about cleaning.

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Marcusthegladiator CDT

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I unpacked our new Formlabs2 today. I'll try a print tomorrow.
Can I blast off the models with a pressure washer like from the Eden260vs or do I need to give them a bath?
And what is it bathed in? Just alcohol?

PS Travis, I think we need a 3D printing sub forum.
 
Alcohol bath. post cure after that.
 
Yea, I'm disappointed with the lacking feedback regarding 3D printing on DLN and on FB groups.
I printed a test surgical guide this morning. And learned why we need so many struts on the object in an SLA printer.
I decided to leave the ridiculous amount of struts on the next test run and well see how it looks in the morning.
How do you guys position your objects? Standing up or lying down?
 
What are you guys post curing the SG Resin with? The $30 Light Box Hack? :)

Thanks
 
Marcusthegladiator CDT said:
Yea, I'm disappointed with the lacking feedback regarding 3D printing on DLN and on FB groups.
I printed a test surgical guide this morning. And learned why we need so many struts on the object in an SLA printer.
I decided to leave the ridiculous amount of struts on the next test run and well see how it looks in the morning.
How do you guys position your objects? Standing up or lying down?
Click to expand...

Standing up you have more layers to print resulting in long print runs but you can fit more objects. Position lying down you have fewer layers. Tilt the object lying down at about 20 degrees and you get a nice flat bottom if you are printing models. The number of struts can be edited as well as the height of the struts
 
Marcusthegladiator CDT said:
Yea, I'm disappointed with the lacking feedback regarding 3D printing on DLN and on FB groups.
I printed a test surgical guide this morning. And learned why we need so many struts on the object in an SLA printer.
I decided to leave the ridiculous amount of struts on the next test run and well see how it looks in the morning.
How do you guys position your objects? Standing up or lying down?
Click to expand...


I have been running multiple tests with our Formlabs 2 and I hope I can aid in anyway I can. For positioning and sprues, for surgical guides i rotate them to be flat with the occlusal side, or "Top" of the guide facing the tray so no spues go into the side that goes on the teeth. Manually sprueing gives you so much more freedom so you can add less of the sprues, it gives you a guide on where to place them and red shade appears wherever you need more supports. Doing it this way I have not had a print fail because of sprues.

Also I wish I knew this before I started printing but make sure to move your objects around the tray, do not print always in the same area as this can cause "Ghosting" which leaves marks on the actual tray because of repetitive laser blasts through it, this can cause objects to not cure properly and fail, leading to you having to buy a new tray. Keep the printing areas on a rotation to extend the life of the tray and if you notice any ghosting simply replace the tray.

Post printing is quite simple, once the object is taken off the tray, dip it into one side of your IPA bath for 10 min, switch to the second bath for another 10 min (This will extend the life of the alcohol so you do not have to replace as often, the first bath will start to get full of material run off and discolor.). After the soaking is done take it out and let it air dry, this will remove the excess alcohol and remove the sticky feel of any extra material stuck behind. From here you can cure the SG material (If that's what you are using) on or off the model (For flexible structures I found curing with all the sprues on and on the model for a bit, then removing the sprues and curing again still on the model helps retain its structural integrity.) then trim off the sprues with the clippers or a disk if the structure is flexible. and your done. You can pumice and high shine the rough areas where the sprues attached to the model to give a nice smooth feel and shiny look.

If you have any other questions please feel free to ask and I will try to answer them as best I can.
 
5a07cf48e00eaf3eece7d666f89cf4ac.jpg

Great explination, the only thing we additional do is before 'bathing' is a gently cleaning by spraying on ethanol 95% on the object and gently clean. We print mainly hollow models to reduce resin use. Our model prints are fixed models wirh extra die. This was for a ELAB course with digital try in and is a case afterwards.


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So After printing a few SG in DentalSG and a few models in grey. I realized printing models on this thing is fantastic. But printing SGs is awful, awful because the occ is covered in spurs. And I can easily print the SGs on the Eden260VS with much better results.
So in the end I think this From2 will be for models.
 
Marcusthegladiator CDT said:
So After printing a few SG in DentalSG and a few models in grey. I realized printing models on this thing is fantastic. But printing SGs is awful, awful because the occ is covered in spurs. And I can easily print the SGs on the Eden260VS with much better results.
So in the end I think this From2 will be for models.
Click to expand...

Hey Marcus, how are you finding your Formlabs 2 after the first few days?

I'm looking at getting one next week and want to find out as much as I can before I make the leap (I've been researching for months and my head hurts!!)

I posted a question up about editing models before printing but I didn't get a reply (I found a solution from somewhere else). It highlighted the gap in knowledge about printing compared to other CAD/CAM (there is always someone who can answer any question no matter how complex on here). As you said, it would be good to have a sub forum for printing.

Looking forwards to a new piece of kit as always.
 
I got the formlab 2 last week. First foray into model printing. The resolution beats the hell out of the iTero milled models. Was using meshmixer to design solid models, but after much angst I've decided to buy model builder. We are only a 8 person lab so the ROI doesn't quite justify it, but I'm going to need it for implant models. Only thing I've noticed negatively is sometimes the models with have a tiny hole and uncured resin with leak from it. Probably from it getting trapped. I should switch to hollow models with an open bottom rather than hollow but closed.

Going to bother Argen this week about how to use the program.
 
I've been using formlabs for surgical guides and printed models for about 3 years now.
Any questions, shoot me a message, I'll be glad to help out.
 
3D printing is fairly new to the industry and also feel their should be a thread just for 3D printing because I am assuming many users here on DLN would have good advice since if you try and talk to some of these companies(formslab, moon ray etc) they usually look at you with a confused look because they dont know much if anything about dental and what we would actually need out of the printer. Our one employee who usually handles the printing went for a tour to formlabs to see how they run things, and I guess he started to talk with their"dental specialist" and basically our tech was disgusted in how little they know about dental which would explain why advancements for printing for dental has been slow. most of the printers out on the market where not built for dental, they where built for the hobbyist, and trying to talk dental with them and get them to change things up to make a "dental specific" printer has been really difficult since they dont have much dental knowledge, and they seem like they wont waste time in making a 3D printer just for dental because the market "isnt big enough" said one employee from formlabs. Who knows I hope in the near future things change, I mean look at our mill machines. CNC machines werent built for dental until companies saw the demand and now look at all the mills that are dental specific. Think 3D printing will get there but for now its really only worth printing models for in house use, since printing usually takes some time to complete a full tray
 
deadhead said:
3D printing is fairly new to the industry and also feel their should be a thread just for 3D printing because I am assuming many users here on DLN would have good advice since if you try and talk to some of these companies(formslab, moon ray etc) they usually look at you with a confused look because they dont know much if anything about dental and what we would actually need out of the printer. Our one employee who usually handles the printing went for a tour to formlabs to see how they run things, and I guess he started to talk with their"dental specialist" and basically our tech was disgusted in how little they know about dental which would explain why advancements for printing for dental has been slow. most of the printers out on the market where not built for dental, they where built for the hobbyist, and trying to talk dental with them and get them to change things up to make a "dental specific" printer has been really difficult since they dont have much dental knowledge, and they seem like they wont waste time in making a 3D printer just for dental because the market "isnt big enough" said one employee from formlabs. Who knows I hope in the near future things change, I mean look at our mill machines. CNC machines werent built for dental until companies saw the demand and now look at all the mills that are dental specific. Think 3D printing will get there but for now its really only worth printing models for in house use, since printing usually takes some time to complete a full tray
Click to expand...
If this thread was from 8 years ago instead of 8 minutes ago,I'd tend to agree with you but there are numerous FB pages and Youtube pages that are all dental.

https://www.facebook.com/groups/670721803065326/
https://www.facebook.com/groups/1703827369906160/



 
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i would agree with you rkm. 3D printers are good for models but that about it(well at the moment). I mean look at the video for the denture. dont know about you but i wouldnt want that in my mouth. looks completely fake. not even close to being realistic(talking about the teeth). i believe soon there will be a printer that will be able to do realistic denture/teeth but not at the moment. to much involved with color and how many materials would be need to print a realistic denture or tooth. When i say print a denture I mean doing it as one piece not two or three or etc. too much involved because when u print with multiple materials u need a way to cure each layer and clean off surface before adding different materials(with printers like the forms). dont see the forms printer every being able to print multiple material as one piece like the extruder printers can do. Those will be the printers that will change model printing for dentistry since you can already print with multiple materials and print with multiple materials and print it as one piece. So all in all I am agreeing with you that there are lots of dentistry related things with the printers but it still needs work, and i am sure most people would agree with that.
 
guides,splints,jigs,temps, partial frames,trays,copings
I'm sure there is more on the way.
 
yeah i know the printers can handle all that stuff i was more or less talking about things more complex like making a one piece realistic denture printed from multiple materials at one time. printing one material is no big deal but trying to print something in multiple materials is not so easy. still not practical to 3D print everything since most prints take multiple hours to do, yes with somethings it would save time but with others is sometimes still faster to do analog. All depends on work flow but i agree with all your points rkm.
 

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