Introduction

3D prints from the Stratasys F270 FDM printer are supported with the QSR support material. QSR is a dissolvable support material and can be dissolved in a hot bath of NaOH solution. The NaOH solution has been typically created using Ecoworks packets. A more cost effective alternative to Ecoworks has been identified as Oxi Action powder.

Purpose

To determine if Oxi Action is a cost effective alternative to Ecoworks, and if so, at what concentrations of Oxi Action.

Process

1. Design and 3D print test blocks with QSR support
2. Submerge in heated and agitated test solutions
3. Take pictures of the print and its support every hour

	Solvent	Ecoworks 1/2 concentration	Oxi Action	Ecoworks	Oxi Action 2x concentration
	Mix Ratio	A + B / 14L	10g / L	A + B / 7L	20g / L
Time (hrs)	Mass	1.35g(A) + 0.65g(B)	1.5g	2.7g(A) + 1.3g(B)	3g
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Conclusion

The Oxi Action 2x concentration mixture is less expensive and performs better than the original Ecoworks mixture. UCSB’s EH&S (Environmental Health & Safety) has approved for the Oxi Action solution to be disposed of down the drain. CNSI SOPs will make the switch from Ecoworks to Oxi Action.