SILICONE MOLDING WITH 3D PRINTED MOLDS

https://www.makerbot.com/ko/professional/post-processing/silicone-molding-2/

Ultimate Guide to Silicone Molding for 3D Printing (Part 2) | MakerBot 3D Printers

 

 

 

Silicone molding is a powerful production method that when combined with 3D printing, can allow you to make several of one product, or create a product in a material that is not supported by your 3D printer.

In this How To, we will show you some of the best practices associated with 3D printing molds to pour into. To demonstrate this process, we will create a bicycle handlebar grip out of flexible silicone using a 3D printed mold.

Working time will vary depending on a number of factors. This process took us about 30 minutes excluding cure times, which will vary depending on the silicone products used.

 

 

 

 

 

 

 

 

 

 

 

SUPPLIES

3D printed mold

Mold release spray

Measuring/mixing cups

Mixing sticks

X acto knife

Silicone

Gloves

Eye protection

Respiratory mask

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PRINT MOLD

As silicone molding is not very demanding on your prints, there are minimal print settings to take into account when printing a mold.

In this case we used standard settings. If surface finish of the cast part is of concern, consider sanding your printed mold.

 

PREPARE MOLD

Spray all mold surfaces with mold release & fasten mold pieces together with rubber bands

OPEN AND STIR SILICONE

You will need to stir each part of the silicone individually before mixing.

 

TIP

Be sure not to stir too vigorously, otherwise you will stir in air bubbles which can be detrimental to your cast part.

 

 

MEASURE SILICONE PARTS & ADD DYE

 

Measure Part A

Measure Part B

Add dye to either Part A or B (this will be specified on your silicone/dye)

Stir in dye

Combine parts A and B and stir.

 

 

TIP

Stir slowly as not to mix in air bubbles.

 

TIP

Check instructions for the “pot-life” of your silicone. This will tell you how long you have to work with your silicone until it cures.

 

Here we used a three piece mold, so we only filled about ¾ of the mold to account for the third piece.

After pouring, the insert seen here was added to create a channel in the cast part for a bicycle handlebar.

 

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OPEN AND REMOVE

You may need a flat tool like the one shown below to provide leverage when opening the mold.

Open slowly as not to damage your part.

 

FINAL PART

Here, you can see the part we were able to create using a 3D printed mold.