Questions tagged [post-processing]

Use this tag for questions about post processing, i.e. additional methods and processes after a print has been completed.

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1answer
155 views

Sealant to increase Water-Resistance of SLS print

We are attempting to print some single-use prototypes using an SLS printer. The parts must be somewhat water-resistant for short-term usage, but do not have to been waterproof entirely. According to ...
15
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6answers
6k views

How to remove white marks from PLA

When you cut or break a PLA model (for example to remove support) it often leaves an ugly while mark where the removed piece was connected. Sanding also tend to leave dull white scratches on the ...
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1answer
19 views

Metal sintering layer-by-layer with DLP

As of current technological advancements, there exists Metal 3D printers that make use of Digital Light Processing (DLP) projector to 3D print metal objects. These printers use a mixture of metal ...
13
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2answers
35k views

What glues for PLA?

I will be creating a small tube styled piece to use as a junction between two pieces of plastic. The idea is to reattach the two pieces and provide strength so they don't break apart again. I plan on ...
0
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1answer
32 views

Making a 3D printed surface easily cleanable

I want to FDM 3D-print an object, and be able to effectively clean the surface with standard kitchen cleaning solutions. While the 3D-printed object would not come in direct contact with food, it ...
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0answers
45 views

What is the best method to use to glue ABS parts together?

I am looking to do a print job where I have a large quantity of different pieces that will need to be glued together to make the finished product. From what I have gathered looking around online, ...
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0answers
25 views

Why is a mold required in isostatic pressing after performing Sintering

After an a object is formed through direct laser sintering, as a post-processing procedure the object is sent for hot-isostatic pressing, In hot isostatic pressing the sintered object is placed in a ...
1
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1answer
244 views

How to smooth PLA Prints without using sandpaper, solvents or paint

I need to smooth some prints with silk PLA filament. The silk PLA has a nice translucent effect but unfortunately if sanded results in an horrible matte finish regardless the sandpaper grade (I have ...
3
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0answers
655 views

Methylated spirits or turpentine to clean resin printer?

I'm new to 3D printing and have bought a resin printer. Cleaning with Isopropol Alcohol seems to be the rage, however I think this is unaware of cost savings. It appears methylated spirits is ok and ...
1
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2answers
86 views

What glues to use for PETG?

In analogy to: "What glues for PLA?", what are the best glues to use for PETG? I mostly print in PETG and have occasional failed prints which I usually reprint. But what if I'd like to repair a print ...
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2answers
446 views

Will Mod Podge work with PLA prints?

Looking for something to smooth out a PLA print. Would Mod Podge be a good solution? Will it stick?
3
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2answers
449 views

How do I remove a 3D print stuck to the glass build plate

I printed a model and now I can't remove it. I have been chiselling away with a putty knife and made little or no progress. I even heated the bed up to 70 °C. That really didn't seem to ...
3
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2answers
4k views

How to remove exess filament from bed after removing model

Recently got an Anycubic I3 Mega Printer and I've been playing with what it can do, but after a model is done it leaves residue on the build plate behind that is bugging me. Do I NEED to remove it? If ...
3
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1answer
89 views

What alternatives are there to sanding resin parts with fine details?

I have some transparent resin parts printed with a polyjet printer. Where the support contacted the part it has a matte finish. The recommended finishing technique for these parts is to sand them with ...
3
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1answer
299 views

overlaying epoxy resin on PLA

I've been experimenting with FDM 3D printers and PLA for about a year now. I'm at the point where I'd like to produce something considerably stronger than PLA, and was wondering if there is a faux-pas ...
7
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1answer
695 views

Bonding PETG to glass

I'm thinking of trying my hand at fabricating microfluidic devices. I'll be using a filament based on PETG (Zortrax's Z-glass filament, which is translucent and resistant to acids and bases). For my ...
3
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3answers
77 views

Painting Text on Model

For a model that has raised text on it, how do go about painting the very top layer of text, to make it stand out from the background? Lets say I printed the whole model the same color, what type of ...
17
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5answers
12k views

Drilling 3D-printed plastic

I need to do some post processing of my 3D-printed models that includes adding some holes. For each of PLA, ABS, PETG and other 3D-printing materials: In what ways is drilling a hole in a model made ...
4
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1answer
96 views

Would PC be considered food-safe in this setup?

I have one 3D printer with Makerbot mk10 extruder and I would like to print my custom cup for tea or coffee from PC. Other than that, I came across idea that FDM printer will always leave small holes ...
1
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1answer
318 views

Nail polish remover that won't dissolve ABS?

In Finishing sunken text in 3D prints, I found that nail polish works great for filling sunken lettering in 3D-printed parts, but the procedure for using it requires removing the excess from the non-...
6
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2answers
2k views

Is Tetrahydrofuran viable for dissolving PLA and sticking PLA objects together?

According to Wikipedia, Tetrahydrofuran dissolves PLA. It also apparently dissolves PET. THF is considered a relatively nontoxic solvent, with the median lethal dose (LD50) comparable to that for ...
6
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1answer
908 views

Sandable primer suitable for PLA?

What kind of primer should I be using for my PLA prints? I want to be able to sand the object after applying the primer for a smooth finish before painting. Would something like this work? https://...
2
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1answer
39 views

What kind of paint and varnish can be used with ABS?

I know that acrylic paint, the same kind that is used to paint miniature figurines, works best for PLA. Does it works on ABS pieces as well? Can I also use the same kind of varnish that is used for ...
3
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2answers
147 views

Finishing sunken text in 3D prints

On several occasions I've wanted lettering/numbering printed as part of a design, but with the ability to make it stand out more effectively in the printed object without having to do detailed manual ...
5
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6answers
266 views

How can you both reliably print and remove your item, without breaking it when detaching it?

I have had problems with items sticking on the build plate, especially when they were big (as they didn't stick well, they corners warped -> all kind of problems). I also wanted to upgrade my printer ...
2
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2answers
222 views

Anyone tried Varathane water-based Wood Stain on Hatchbox Wood PLA?

I printed parts for a Harry Potter wand with HatchBox Wood PLA, now I want to apply stain. I intended to try MinWax PolyShades wood stain, then noticed Varathane water-based wood stain is available at ...
49
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9answers
77k views

How do I give 3D-printed parts in PLA a shiny smooth finish?

The surfaces of my printed parts using PLA plastic look rough and uneven. Would changing filament to a better one make any difference? If not, what kind of methods can I use to achieve a smoother ...
3
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2answers
497 views

Post processing FDM for strength

I'm looking for a post processing method for increasing the functional strength of a 3d printed part originally made by FDM. I've tried printing my part with solid infill but the layer separation is ...
2
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2answers
60 views

Unbonding Hot Glue

I made a print that involves joining two halves together to create the full model. I decided to use hot glue to bond the halves and on one model, the parts came together slightly skewed. Is there any ...
1
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1answer
425 views

Can I use Araldite to stick PLA to metal frame?

I have a PLA base, that the MOSFETs are sitting on. I don't want to drill through the base of the printer, I was thinking of using Araldite to stick the PLA base to the metal frame. The PLA base will ...
10
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5answers
251 views

Secure disposal of 3D prints

The company I work for is protective of IP and has security procedures for disposing of anything that could be stolen for industrial espionage. Paper gets shredded and sent to trusted recycling ...
1
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1answer
99 views

Sealing PLA & oil-based art supplies?

I will be printing an item that's usually made out of resin, but my version will be made out of PLA. Here are some questions I have: Usually, people seal the resin with brands such as Testor's, ...
2
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1answer
647 views

How could I print a large sphere-like object?

I have a STL file with a rather large roughly-spherical object. I'd like to 3D print it to be fairly large, and hollow inside. Since the printer I'd be using has a max size of (18–20 cm)^3, I'd have ...
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2answers
420 views

Silicone spray as a release agent?

I've just printed my very first part and it did not want to come loose from the build plate, it fact, it just broke instead. I can heat the bed up again and work it off, but I wondered if a release ...
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1answer
1k views

How to attach a metal bearing to a print [closed]

I have a bunch of ball bearings (608 2RS) that I'm planning on using in a project with printed parts. But I'm not sure how to attach and secure them properly. How is this done usually?
17
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7answers
3k views

What can I use to “sand” my ABS prints?

I have a 3d printer that uses ABS filament. The software I use will generate vertical supports for my objects before printing that can be easily broken off after they have been used during print to ...
1
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1answer
306 views

How to paint ABS to look like wood [closed]

I have a piece printed in white ABS, which is a half-scale replica of an unvarnished oak sculpture. After sanding off the worst of the layer lines, I'd like to paint it to get a nice wood finish. I ...
5
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2answers
3k views

How to smooth the surface of parts printed with Co-polyester (PET) filament

Are there any techniques for getting a smooth finish for parts printed with co-polyester (PET) filaments? More specifically, I am looking for an alternative that does not roughen the look of the part -...
1
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1answer
232 views

FDM, ABS Post-processing methods

I have built a few parts that have printed 'pins' on them (2mm diameter 1.5 cm length). Due to the orientation that the build requires the pins have to have support material on them. (The part has to ...
5
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3answers
4k views

How to remove a PLA print stuck to a BuildTak sheet

BuildTak is great because the printed plastic really sticks to it, it pretty much solved all the problems I had with prints detaching from the buildplate during printing. However, it does sometimes ...
2
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4answers
878 views

Is it possible to 3D print sharp objects with high details? And how?

I mean 3D forms like these? In a small scale (height: 1-2 cm, width: 0.5 cm). I want to keep all the form's details. If it is possible, what printer do you advise? How much does it cost to print one ...
7
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1answer
261 views

Maintaining fine details while applying smoothing methods

I've been reading and experimenting with Acetone vapour smoothing on some printed ABS parts. My problem is that I need to selectively smoothen the printed parts which vapor smoothing doesn't allow. In ...
2
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2answers
972 views

Methods for smoothing 3D objects [closed]

How do I smooth 3D printed objects? What is the best / common method to do this?
9
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2answers
3k views

Practical concerns smoothing PLA print with chloroform vapours

One way to give PLA prints a smooth finish is treatment with chloroform vapours (or other solvents, as mentioned in this answer). This method is even featured on Ultimaker website. I would like to try ...
5
votes
1answer
307 views

Stone-look surface via painting?

Has anyone tried painting a PLA (or other) print with stone-look spray paints? In particular, how does the result look compared to printing with stone-fill filaments? It looks a lot cheaper, but will ...
5
votes
1answer
1k views

How do I give 3D-printed parts in ABS a shiny smooth finish?

The surfaces of my printed parts using ABS plastic look rough and uneven. What methods can I use to achieve a smoother finish for my for 3D-printed objects?
1
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1answer
522 views

Which 3D printer should I use to make custom miniatures for a tabletop game?

I would also be curious on how I could get the best results with these printers. I am in a situation where I have cheap access to a: Fortus 250mc, which prints in ABS and has a minimum resolution of ...
20
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3answers
5k views

Are there any ways to make a 3D print transparent?

I am aware of several "clear" filaments for a ABS or PLA printer. They, however, have a cloudy or frosted glass appearance. I do not believe this is possible to eliminate but I believe it can be ...
12
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4answers
2k views

How to easily get rid of rafts and support structures?

My printed parts consist rafts, supports and other extraneous filament when printing with ABS or PLA. What are efficient general techniques of removing them?
2
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5answers
118 views

Tips for printing and being able to get of base easily

I'm very new to 3D printing and I've had numerous failed prints. Sometimes, the print is good but while trying to get it off the base I end up bending or breaking the print. My question is: How to I ...