Best printer for my purpose

[Andrew Priddy]

Sorry if I am really dragging this thread out, but even though its not a huge outlay for one of these hobby type printers something in the back of my mind keeps saying "If those frames and models aren't dimensionally accurate to the scan you're in for lots of heartache"
what is the best way to dial in the accuracy of the model Vs scan so it will be acceptable.
Would I have to scan the model after printing and then try and overlay it with the original scan to look for discrepancies, or is there another method to test ?
Thanks in advance

best fit will be to print and do some wax touch-up/ cleanup before casting.. dimensionally, the print will be accurate..
ive used enough dental resin to know that just because it has the wording "dental use" doesn't mean it is "magically superior".. quite the opposite IMO

 

[Affinity]

Dimensional accuracy is tested by printing a cube or test pattern and measuring it. If its supposed to be 1cm cubed, it should measure that with a micrometer.

 

[Andrew Priddy]

a 10mm cube is a 10mm cube. not an arch. resins aren't cold cure and don't shrink. model inaccuracy's (print or pour) are the "bigger inaccuracy" to be concerned about. then add in scanning and any host of errors...

for printed frames to cast, i would skim the frame with wax (where it wont alter fit).. and also wax-in the intended retention points for intimate fit.
"skimming" the frame with wax will allow for the immediate "heat expansion" of the frame which cracks the 8lb block you are about to throw 4lbs of molten crco into.. and leads to the biggest inaccuracy imo...

i love the thrill of "ducking" molten metal, don't get me wrong

 

[Scotties dental studio]

@Andrew Priddy @Affinity
MANY thanx for all the valuable info that you have given me so far, it has really helped to ease my mind about getting into printing, I will no doubt be asking a hoard of tech questions once I have invested in a printer, Even though the idea of doing some digital stuff is daunting I think it will be rewarding to see the digital workflow come to life after having done the analog methods for so long, It will still only be for a few jobs as I do not receive many IOS but that should allow me the time to iron our gliches and try different things to perfect my product

 

[Andrew Priddy]

any time, you will do well starting with a few accounts and going from there. Analog is currently being "lost" to digital.. right along with the mastery to understand the steps in between. understanding "both" or "utilizing" the 2 together brings a low cost solution and optimal results. there is always something new to learn in CAD