Changing the Heat and Compression Factors

Splice Heat Factor changes the amount of time that the splice is heated. Generally, increasing the splice heating factor can help for some filaments that show weak splices with the default settings while decreasing the splice heating factor can help for some filaments that show too many stringers or hot tool buildup.

The optimal splice heating factor is to have it at a percentage which is as low as possible while still having strong enough bonds, because higher temperatures means more hot tool buildup and stringers in splices. Here’s an example of a stringer below:

The Compression Factor refers to the distance the two filament ends are compressed into on another.

Reverse splicing changes which filament is compressed. Forward splicing heats the outgoing filament and compresses the ingoing filament into it. Reverse splicing instead heats the ingoing filament and reverses the outgoing filament back into it. Reverse splicing is useful for flexible filaments (like TPU) which can buckle under compression.

In order to access and change these factors in the Chroma  software, go to Profiles > Material Profiles. Here, you can edit the Heating and Compression Factor values for each material you print with. The values for both can range from 1 to 15.

Heat factor - Each increment of 1 adds an additional second to the heating time. Note that higher heating times may require slower print speeds.
Compression factor - Each increment of 1 adds an additional compression of 0.6 mm to the splice.

You can learn more about this in our Splice Tuning Guide.

If you have any further questions, please contact us at support@mosaicmfg.com.