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Jieun Lee

Jieun Lee

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How to make 3D printing less 3D printed looking

  • key point is: how can we smoothen out the surface?

Method

How-to

Pros

Cons

Sources

Sanding

  • will need different seams

  • after sanding, spray filler and spray paint can make the parts to look not like 3D printed

  • able adjust how smooth we want the surface to be

  • can be accurate in a way since we are sanding the parts that we want

  • could make a mistake of sanding to much

  • if it is a large part, time consuming to sand the whole part

https://www.youtube.com/watch?time_continue=258&v=NLoB52nPuao&feature=emb_logo

https://www.youtube.com/watch?v=0vgynnYzo08

Using Acetone

  • pour small amount of acetone into the glass that has paper towel in it

  • put the model inside the glass, and put a small fan in it so that the air moves

  • displace water around so acetone doesn’t leak

  • acetone will melt the 3D model

  • take it out, and dry the 3D model

  • acetone does its job to smooth our the surface

  • takes only about an hour

  • must be printed with ABS (Acrylonitrile Butadiene Styrene)

    • which gives toxic chemical when heated

    • shrinks when it is cold

      • not suitable

  • when doing this, could be dangerous since it is flammable

  • details can be gone

https://www.youtube.com/watch?v=6xFUNFG-UKE

https://www.youtube.com/watch?v=rn4edNztaPU

Using Spray paint / Spray Fast drying polyurethane (thinking of sticking with this option)

  • spray paint (more than usual) then spray a layer fast drying polyurethane, fan it

  • do this multiple times

  • no need to sand the 3D model

  • the details might be gone

https://www.youtube.com/watch?v=rn4edNztaPU

Shorter Layer height

  • set the layer height as a low number

  • no need to do an extra step of smoothing out the surface

  • time consuming

  • longer the time, easier for the machine to get jam and stuck

Heating

  • use a heat gun / hot air gun and along the surface of the 3D model

  • fast (I guess?)

  • able to choose parts to smooth it out

  • can change the shape entirely if it is too hot

https://www.youtube.com/watch?v=SI2AqrxIfkI

https://all3dp.com/2/pla-smoothing-a-beginner-s-guide/

Using brush on coating

  • brushing on to the 3D print

  • easy procedure

3D Gloop

  • brushing on to the 3D print

  • easy procedure

  • material: PETG

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Foam

  • got some information from Sheila

    • open cell vs closed cell

      • closed cell has cells that are sealed off, therefore the air is not trapped

      • her guess is that we would want to use a closed cell that is firm/extra firm (closed cell is usually firm)

  • Lux HQ foam / Neoprene Foam

  • the website sells adhesive for the foam – looking in depth to this

How to attach Foam:

  • Epoxy the fibreglass and foam (method that the seats is also using

Neoprene Foam

  • a closed cell

  • firm foam

  • comes in many thickness

    • 1/8” or 1/16” can work for the top of the cover

    • 1/2” or 1/4” would work for the side of the cover

  • can cut it with knife,

Access Points

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Access Points are:

  • power supply input

  • AUX battery input

  • USB ports for phone charging

Labeling and Making it professional

  • could label with words and image

  • engraving can work

ex.

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