Agreed. I always bill customers by weight of printed object, including supports. Filament is sold by the kilogram, so the only reasonable materials markup is weight-based.
In theory, volume cost would be proportional to weight cost in objects printed at 100% infill, but unless you’re printing firearm parts, you probably don’t need 100% infill in most cases. Using lower infill parameters greatly complicates the calculation, because you have an outer shell that’s solid, enclosing an inner space that’s mostly hollow. Some slicers like Cura will tell you how many meters of filament the print will use, and estimate the filament weight in grams. These estimates are not always very accurate. For that reason, I generally provide a price estimate, print the object, weigh it, and then provide a precise price calculation for the customer, based on my setup fee (currently $10 per order) plus my price per gram.
On an unrelated note, I’ve discovered an annoying thing about the “3D print on demand” business. Most prospective customers don’t have a very firm grasp of what’s printable and what isn’t, because they don’t own a 3D printer and have generally never used one themselves. People try to get me to print objects that have insanely fine details (e.g. human eyelashes), or planes that have a thickness of zero. My general feeling is that 3D print on demand will become less of a thing as the cost of 3D printers continues to drop. Once anyone who wants a 3D printer owns one, the idea of paying someone else to print something will be seen as silly.
This updated version is confusing on the customer view for my hub. I have RepRap printers of different configurations (print area, nozzle size, etc.) set at different prices, I cannot even tell which printer is what on the customer’s view. Where can I put this information? I have looked at other hubs, and see each color is in it’s own block of information, make for a very long page and hard to follow.
@wei_sheng_3139 yes, it is understood. I guess 85% of the feedback on this thread comes down to that feature. So, we need to reconsider. The dev guys will have a look this week. Again, sorry for the inconvenience. Cheers!
We’ve taken your feedback and will update some core pricing features this week. Two changes I would like to highlight, because of the discussion on this thread:
The possibility to adjust sliced volume on the order page will return (!)
The reference models on your Hub profile will be fixed
Hi all (@Silvester@Christianna_Tay@Aja@useemtasty@wei_sheng_3139@MtmrtsN@LaGi),
We deployed the first update and I think most of the feedback on the page is now fixed. Yes! Please have a look and it would be great if you could let me know if it works for you now.
Hey @Flabou2! In order to do this you can use the Object volume. It should correspond linearly with the weight. You can check the density of your material with your supplier. Currently our catalog of materials doesn’t contain accurate information on these densities. As soon as it does we can start to supply this information for you.
Hey @meagan_mason_75, what factors would you need to have taken into account? Currently you are already able to take the amount of volume and amount of prints (first print, subsequent prints) into account for pricing. I understand these are only rough indicators of printing time but nonetheless helpful. Any suggestions for this would be taken into account, cheers!
Good morning there! How would I go about demoing these new features? I took a peek at the hub options and I don’t appear to have any new pricing options on my dropdown lists for filaments. I also don’t have any new orders currently to take a look at potential changes to the volumetric pricing.
i would like to see time, hours or minutes taken into account as a pricing strategy. i.e. large, tall prints take longer than prints that a large on the x and y but not the z.
so either a height surcharge beyond a certain point, an option to price by time, so X currency per hour / minute etc, or some effort made to educate customers that some types of prints will be expensive because of the time it takes to make them rather than the material cost which might be small.
