To be or not to be....... this is the question !
Some personal thoughts on the Photon and how to push it to the limits….
So I’m looking for a complete workflow with the goal to get the best dimensional accuracy using Photon for printing dental model.
So the main purpouse is “dimensional accuracy”
I decided to use dental resins that have a lower shrinkage if compared to generic resin. I'm testing Anycubic Dental Skin and another resin from an Italian Producer. The Z resolution chosed was 50 um, a good value for dental models.
First of all: Run Resin Exp Finder from Photonsters. This is the starting point.
It gives me a range of exposure time, min & max, and a sweet spot (even if I have some difficulty reading it..)
Once found the range of exposure, the next step is to perform other tests to validate and fine tune the exposure time.
I used for this porpouse the NestaCube file: it gives me two types of information, the first about fit (the smaller cube into the bigger): here I can modify exp time to have the best fit between the parts:
This test get us dimensional information too: i can measure the bigger cube dimensions to see if they correspond to the nominal;
And here I have the first doubt: is it more correct to adjust first the fit to have the best, and last measure the dimensions, and if needed act on scaling the model ?
Another solution could be first measure the dimensions and adjust time exposure to have correct dimensions, and then looking at the fitting and correct this if needed by an x-y dimensional compensation. The Go-NoGo Gauge test is my preferred tool for this.. (but we do not have horizontal compensation in Photon slicer and neither in ChiTuBox…. and voxelOps is a little complicated to install and use..)) ?
What is the PhotonMasters thought?
翻譯年糕
