Infill question 1

[itsmoked]

I'm trying to get a handle on infill percentage and what it means to the final part strength.
It seems to me that out of all the various magical settings involved in the typical FDM print infill has got to be the most ethereal of them all.

It's also the one that can change the material quantity consumed the most, product weight, print time the most, and probably the most important thing it controls is the product's strength.

I'm not looking for the precise result of a specific infill percentage but just a rough guidance.
What are your rules for messing with the infill percentage?

I doubt 50% infill makes a part 50% as strong as 100% but what does it do, 25% of the strength or 75%?

Paint me curious.

Keith Cress
kcress -

http://www.flaminsystems.com

 

[BrianE22]

I'm a novice at FDM and didn't know what infill meant. I'm guessing you've searched Google too. I did find this - they offered some numbers for strength:

https://rigid.ink/blogs/news/optimum-infill

 

[itsmoked]

Thanks Brian! I didn't see that one. I'll read it tonight.

Keith Cress
kcress -

http://www.flaminsystems.com

 

[arunmrao]

Keith,

I use the following infill numbers while 3D printing FDM parts.

For modelling and design approvals : 5-10% infill.

For making templates to check patterns and core assembly : 10-15% infill

For patterns and core boxes : 20% infill.


I have been using the above data for the pst 20 months. Also, perhaps you could consider new varieties of filaments ,,which could enable you get higher strengths with lower infill.

I am presently engaged in trying some of these and other filaments . Also I am planning to make PLA filament patterns substituting wax patterns for Investment Castings.

Hope this helps though it does not directly address your question.

"Even,if you are a minority of one, truth is the truth."

Mahatma Gandhi.