<p>It's important to provide information regarding the program you are using to model your molds. Even without that information, there are general methods to produce the portion you require. </p>

<p>Consider that you already have the outer portion, what you describe reasonably well as a cookie cutter style. If you are using someone else's model cookie cutter shape, the following will still apply.</p>

<p>Most programs have a subtractive feature. An easy program that provides this feature would be Tinkercad. Running with that program, the steps would be as follows:</p>

<ul>
<li>import the current cookie cutter shape </li>
<li>scale up the shape to ensure
that the inner portion is decreased, by increasing the wall
thickness. It is expected that scaling up the shape will enlarge both
the outside wall and inside wall of the cookie cutter shape create a
block that will encompass the cookie cutter, circular or rectangular
as desired. </li>
<li>use the subtractive feature to remove the cookie cutter
shape from the block </li>
<li>this should also segment the outer portion of
the block, which would be removed, leaving the inside cookie shape.</li>
</ul>

CC BY-SA 3.0
2018-02-02T02:24:15.860Z
2018-02-02T02:24:15.860Z
fred_dot_u
<p>Help, I know how to print simple cookie cutter style molds, but I need to know how to turn that open shape into a closed smaller version that can be used as a plunger.  Reason being, is I make bath bombs, so it would be so much easier to get bombs out of molds if I could make a plunger.  Thank you so much for any help!!</p>

<molds>
Making a plunger
bgshadowman
# Making a plunger

(Asked by: username_0 on 2018-02-01)

Help, I know how to print simple cookie cutter style molds, but I need to know how to turn that open shape into a closed smaller version that can be used as a plunger. Reason being, is I make bath bombs, so it would be so much easier to get bombs out of molds if I could make a plunger. Thank you so much for any help!!

**Tags:** molds

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## 1 answers

### Answer by username_1 on 2018-02-02. Score: 1

It's important to provide information regarding the program you are using to model your molds. Even without that information, there are general methods to produce the portion you require.

Consider that you already have the outer portion, what you describe reasonably well as a cookie cutter style. If you are using someone else's model cookie cutter shape, the following will still apply.

Most programs have a subtractive feature. An easy program that provides this feature would be Tinkercad. Running with that program, the steps would be as follows:

* import the current cookie cutter shape
* scale up the shape to ensure
  that the inner portion is decreased, by increasing the wall
  thickness. It is expected that scaling up the shape will enlarge both
  the outside wall and inside wall of the cookie cutter shape create a
  block that will encompass the cookie cutter, circular or rectangular
  as desired.
* use the subtractive feature to remove the cookie cutter
  shape from the block
* this should also segment the outer portion of
  the block, which would be removed, leaving the inside cookie shape.


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