Newbie needs advice

[Trakyan]

For prototyping, you wont need any bigger than the prusa's build volume, in fact less would do. Once you get bigger than that the parts stop being very practical because the material and process isn't particularly high strength.

For model making, it depends on how big you want the model to be. One thing to note is that a mendel style printer like the CR-10, especially a big one is either going to go slow and take forever (several day long prints), or leave you with nasty ringing artifacts which may be difficult, time consuming or impossible to remove without losing the details from the model. I'm assuming surface finish is important to you for the models.

[tuxdelux]

For prototyping, you wont need any bigger than the prusa's build volume, in fact less would do. Once you get bigger than that the parts stop being very practical because the material and process isn't particularly high strength.

For model making, it depends on how big you want the model to be. One thing to note is that a mendel style printer like the CR-10, especially a big one is either going to go slow and take forever (several day long prints), or leave you with nasty ringing artifacts which may be difficult, time consuming or impossible to remove without losing the details from the model. I'm assuming surface finish is important to you for the models.

Would a big printer be slower than a small one when printing the same sized objects? If so, can you explain why? I'm still not decided but that would be a good argument for a smaller one.

[Roberts_Clif]

Would a big printer be slower than a small one when printing the same sized objects?
If so, can you explain why? I'm still not decided but that would be a good argument for a smaller one.

Two printers of the same make and model may not print a the same speed theoretically. Though most printers will print the same model model at close to the same speed, if the same basic settings are the same (Print Speed, filament feed rate ect...)

I have two identical 3D Printers setting side by side, If I start the Same print at exactly the same time.
One of my printers will finish the same 4 Hour Model 1 minute faster than the other.
(Why is because the Crystal clock speeds may not be exactly the same)