Perfect Exposure times dial in ANY Resin - better 3D Print results - by VOG

so you've got a new resin for your 3d printer but what exposure times do you use hey guys this is a common enough problem getting the exposure times wrong can lead to poor quality prints or even worse print failures if there's no helpful information or a roof file online you may feel lost and even if there are numbers out there there's no guarantee someone else's settings will work perfectly for you so it's generally best to figure this out yourself and personally i've been using the xb2 validation print by botonsters for ages however frozen have a very useful resource to help dial in exposure times and you can use this on any make or model of printer or resin so here i'll talk you through using it it begins with their help center and i'll provide a link to that in the description there you can download the frozen xp finder print and open this in a slicer of your choice starting with the normal layer you need to enter a number that will get you started and personally when dialing in i prefer to over expose than under expose if you use too lower number and under expose you might end up with no print at all and a soggy mess stuck to your fep if you overexpose you will get a print but the detail might be blurred personally i know which problem i prefer to work with so it's overexposed all the way for me with monochrome printers if there's no other information available and if it's a standard resin i tend to begin with a normal layer time of around three seconds if it's a castable or speciality resin i'd probably double this as my first guess if you've got a pre-monochrome printer such as the original elegant mars exposure times are typically between 7 and 15 seconds but a guess of 12 seconds has always worked well for me we'll be sticking with a layer height of 0.05 millimeters here which should get you great detailed prints you'll also need to think about the number of burning layers and the bottom exposure times these settings are to ensure that the first few layers stick well to the build plate and again if there's no other information available i would go with six or eight bottom layers which is fairly typical and the burning exposure time that's 10 times longer than the normal exposure time now with this printer which is the frozen sonic mini 8k and this z mud resin i'm ignoring my own advice and sticking with 20 seconds and if you've watched my recent videos you'll understand why but 10 times the normal layer height is generally a nice starting point for bottom layers and with that done we can slice and print the frozen xp finder once you've cleaned and cured it properly you can inspect it carefully looking at the frozen help page it's easy enough just compare your print against the images shown this will help you figure out whether your print is under or over exposed so you can increase or decrease your exposure times now i've been fairly lucky here three seconds looks pretty good though as expected i think it's a little overexposed i don't think i need to increase the exposure any further but maybe i'm wrong and right now we're just trying to narrow down our search range so i'm going to overexpose even more and see if i'm right as the mini 8k is a monochrome screen i'll make a leap of another half a second but with a pre monochrome i'd increase the normal layer height by a full second here's the resulting print and a good tip is to label these on the back so you don't get confused these changes are on the subtle side but it's fairly clear that this print is more overexposed than the previous print the text is slightly blurred and the lines are a little bit wider than ideal unfortunately at the moment frozen doesn't tell us about these corner areas but it seems obvious that at three and a half seconds exposure it's starting to bleed detail together here another common sign of overexposure is unexpected holes forming in the print like these from this i'm confident my exposure time should be less than three seconds so now i'm going to take another half a second jump in the opposite direction reducing from three seconds to two and a half seconds my guess is that my ideal exposure time lies between two and a half and three seconds but let's see what happens here's the printed frozen xp finder with an exposure of two and a half seconds and at a glance it's pretty much the same but look more closely some of the text is missing these boards and lines have certainly thinned out and the layering of these pillars is much fainter or at least that's how it looks to me on camera this may seem a little different so you'll just have to trust me but certainly for me this print is slightly underexposed but not by much in fairness now these prints don't take long to do about 20 minutes in my case and dialing in the exposure time helps guarantee better quality prints as i'm thinking my guess was right about my ideal exposure time being between two and a half and three seconds i'm going to perform print tests at 2.6 2.7 2.8 and 2.9 second exposures again if this was a pre-monochrome you would perform similar print tests at half second intervals anything less than that and you really wouldn't see any changes at all and here they are from 2.5 to 3.0 from your perspective they probably all look pretty similar but with a very close inspection you can see the subtleties from this i've decided that 2.6 was my best test print but before we get cracking printing our favorite model take a look at what frozen says here after finding the perfect settings on the frozen xb print we recommend increasing the normal layer exposure time by at least 10 percent on the actual print and by 20 on larger models over 12 centimeters well we've followed their guidance so far so let's carry on 10 of 2.6 is 0.26 which means my ideal printing exposure time is either 2.8 or 2.9 depending on whether you want to round up your decimal places or not after looking at the 2.8 and 2.9 prints i prefer the look of the 2.8 so that will be my normal exposure time for this particular resin that means i can feed this figure into my slicer with confidence if we're sticking to the 10 times rule for the bottom layer we would adjust our time to 28 seconds as said i'm happy to stick with 20 seconds i decided on earlier and that's something else you can adjust if you like if you feel the prints are sticking too well to the plate try lowering this figure by a few seconds and test again if it's not sticking well enough try increasing by a few seconds you'll quickly find a level where it prints well but slices away cleanly from the plate i'll test my settings on this excellent miniature by mammoth factory i love this little guy and i'll include a link in the description to these excellent miniature designers so what do you think i'm happy with this print there's plenty of detail and no failures so that's a good printing result you can see how by increasing or decreasing your exposure time in small control tests the frozen xp finder and similar printing aids can help you dial in your perfect exposure time helping you to achieve the best possible prince whether you own a frozen an eliku and any cubic reality or whatever this test will still work for you and it has been made freely available to the printing community by frozen so well done them and before finishing i have a couple more quick printing tips that you might find helpful prints usually fail because of poor supports getting this right isn't difficult and i have a useful video for you which you may wish to watch if you're dialed in nicely with perfect supports but your prints fail to form properly try reducing the lift speed lift is the speed at which the plate withdraws from the feb if it lifts too fast brittle resins can often snap free and prints principal fail slowing the process down does mean that the print will take longer but a successful print is better than a failure so reduce it by 5 seconds or so and do another test print one last consideration is consistent temperature most resins are happiest around 25 degrees celsius so if your room temperature is less than this consider fitting an enclosure heater and that's it for this video guys if you have any questions as always feel free to drop me a line so take care guys and thanks for watching

Channel: VOG

Views: 33,829

Keywords: exposure times, phrozen xp finder, 3d printing, resin printing, vog, vegoilguy, normal layer, burn in layer, bottom layer

Id: jOjB3Fr-0no

Length: 11min 0sec (660 seconds)

Published: Sat Jan 22 2022