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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5
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3answers
3k views

What glues to use for PETG?

In analogy to: What glues for bonding printed PLA to injection-molded plastic?, what are the best glues to use for PETG? I mostly print in PETG and have occasional failed prints which I usually ...
22
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4answers
57k views

What glues for bonding printed PLA to injection-molded plastic?

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 ...
3
votes
3answers
101 views

What's the best way to connect pieces of a large print after printing?

I have a number of fairly large printed pieces. The parts, when assembled, form a very large sword. (The model is this: https://www.thingiverse.com/thing:4178060, and is not mine.) It is about 7' ...
0
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1answer
40 views

Which filament type is easiest to sand smooth?

For print applications where sanding is to be used to reduce the appearance of layer lines on medium to large objects with sweeping curves, but little to no surface detail (A vase or cosplay helmet, ...
2
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2answers
2k views

Good lubricants for moving parts?

What materials work well for lubricating moving PLA, ABS, or PETG parts? I'm talking items like the the Gear Bearings or Print in Place Engine. I've played with a few lubricants on my own, including ...
3
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1answer
97 views

Should I cure my 3D printed resin model before or after sanding down imperfections?

When printing a 3D model on a resin printer should I sand down imperfections and marks left by supports before or after curing? What are the benefits and drawbacks of doing it either way?
0
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0answers
35 views

How do metal infused filaments work?

I am considering making modifications to my Ender 3 so I can print metal-infused PLA, but I'm somewhat unclear on how it works and how the PLA is supposed to be separated from the metal content in ...
0
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1answer
642 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 ...
5
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2answers
6k 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 ...
4
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2answers
155 views

What temperature should I bake PLA prints at to increase strength?

I recall seeing that it's possible to "bake" or "anneal" or even "remelt" PLA prints to strengthen them. As I understand it, the main effect is improving layer adhesion, ...
1
vote
1answer
84 views

How much time should take for UV lamp to cure resin?

I've bought recently this UV lamp to cure my SLA prints: But I seem not to be able to get the job done. I got some leftover supports and wanted to throw them in the trash, so I put the lamp onto them, ...
4
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0answers
70 views

Perimeters/shells not properly fusing - delamination

I come to you all in my time of need, as I have nowhere else to turn. I’ve been a 3D printer for about two years now. I have an Ender 5 Plus. Up to this point, all of my prints were fine straight out ...
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2answers
96 views

What is the best way to collect sanding dust?

I am pretty sure that sanding makes a lot of microplastics, so it would be nice to collect the dust, and melt it to got a blob of plastic again instead of millions of tiny particles. What is the best ...
5
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5answers
1k views

Glue for attaching PLA pieces to titanium

I'd like to attach a piece I printed out of PLA to a small titanium rod. I've previously used Superglue (cyanoacrylate) to glue PLA pieces to each other with great success, but the problem is that if ...
1
vote
1answer
152 views

Gluing paper to PLA objects

I have 3D printed in PLA a curved viaduct for a model railway (N gauge) and affixed inkjet paper using UHU glue. The layout lives in my garage and as soon as the viaduct goes into the garage the paper ...
4
votes
3answers
271 views

How do you remove rough edges from completed prints?

All of my completed prints come out with rough edges. What are some methods for removing rough edges from 3D prints? Also, are there any ways to reduce rough edges on prints? For reference, I use a ...
3
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2answers
116 views

3D print retouch with soldering iron

Does anyone have any information about using a soldering iron to fix and retouch 3D prints? On the market, for example, we can find Modifi3D pen. Why has nobody created a simple soldering tip for this ...
0
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2answers
60 views

Apply / find / create a stainless steel coating to apply to a PETG or PLA part to make it react to a magnet

Apply / find / create a stainless steel coating to apply to a PETG or PLA part to make it react to a magnet. My goal is to make a small tubular and conical shapes that can be painted with a stainless ...
1
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1answer
138 views

Accidentally over curing a 3D print

I'm relatively new to SLA 3D printing and 3D printing in general. I got a budget SLA resin printer that I've been messing with for a few months now. So I had a few soft prints laying around that have ...
1
vote
1answer
571 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 ...
1
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2answers
134 views

Can 3D printer work with enamel paints (or paints generally)? Are such printers available?

There are lot of advices on the web how to paint the 3D printed objects, but generally they are advices for manual painting and this required special skills, especially if the object is small. My ...
2
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2answers
148 views

How to get superglue off PLA filament?

So I'm making my friend a Monado sword replica and I've printed the handle in 2 pieces as to fill it with electronics and then superglue the 2 halves together. I seem to have put too much on and it's ...
0
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1answer
769 views

Clear coating resin 3D prints

I'm looking to put a UV-blocking clear coating on some of my resin 3D prints. I've tried krylon UV-Resistant Clear Coating but it seemed to react with my print making it softer and easy to break. I'm ...
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2answers
4k views

SLA resin post-processing: gluing parts together

I've recently purchased an Elegoo Mars Pro 3d printer, and I was wondering when printing large pieces that need to be printed in different steps: is there some kind of post-processing to make it more ...
0
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1answer
63 views

Post-processing and filaments for weather-proof electronic enclosure

I'm building a weather-proof enclosure for some electronics. It's expected to stay exposed outside all the time so I'm worried about its resistance: What would recommend me for 3D filament? I was ...
9
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2answers
3k views

Water does not flow through 4 mm hole when there is a small amount, how to let water flow through small hole even when there is low pressure?

I have a 3D print where there are 5 holes with a diameter of 4 mm in a cup, and I would like liquid to flow through all 5 holes at once while slowly draining the cup (by slowly I mean: just take a few ...
0
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1answer
48 views

Can parts that have warped (after being printed) be un-warped?

I have an on-going project to build a large lampshade in the shape of a geodesic dome. It's made of 3D printed frames that will be covered with rice paper. I printed the parts in PLA over a month or ...
1
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1answer
208 views

SLA printers: safety with resin contaminated disposals

I've purchased an Elegoo Mars Pro recently, and I've been watching hundreds of video of all kind of processes, and everyone tells the same: resin is toxic, so you should cure it before throwing it to ...
2
votes
1answer
913 views

Curated resin size shrink (and methods to reduce it)

I've recently purchased an Elegoo Mars Pro 3D printer. I've read about that percentage of resin shapes going smaller and I understand that. But are slicers (or software which help with the joints) ...
12
votes
5answers
8k views

Prints are now sticking too well to the bed. What to do?

I'm a beginner. I've a Printrbot Play with a heated bed add-on. I'm using it exclusively with PLA. It worked great initially, but then I took the nozzle out and put it back in, and the Z calibration ...
18
votes
6answers
18k 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 ...
17
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6answers
11k 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 ...
0
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1answer
78 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 ...
0
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1answer
48 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 ...
1
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0answers
27 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
2k 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 ...
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2answers
3k 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?
7
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2answers
13k 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 ...
4
votes
2answers
12k 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
votes
1answer
213 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
votes
1answer
3k 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
votes
1answer
840 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
votes
3answers
150 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 ...
4
votes
1answer
212 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
1k 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
3k 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
2k 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
votes
1answer
117 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
votes
2answers
709 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
votes
6answers
281 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 ...