Stacking Logs for a Log Cabin
by sconine, published
Another model that was inspired by my kids. Classic logs to stack, sort of like Lincoln Logs, but I don't think they are the same size as Lincoln Logs. 3 different log styles and a roof. These things are easy to print and roll right off the automated build platform.
We have had some debates around the house about the cost of these logs, I suppose given the amount of plastic in them, energy used to make them, etc... they are pretty inefficient. My point of view is that at this point in the evolution of 3-D printing we're still trying to discover what is worth printing, so with that in mind, figured what the heck might as well post these since they are kind of fun.
Thanks for the comments! Pretty interesting to see the math behind the cost. Makes me feel better.
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I print these using raftless printing configured basically how they describe on the makerbot wiki (http://wiki.makerbot.com/thingomatic-doc:raftless). The modifications I made are: 1) I changed the Object First Layer Feed Rate Infill Multiplier (ratio) to be 0.5 2) I change the Object First Layer Feed Rate Permieter Multiplier (ratio) to 0.5 3) I changed the Object First Layer Flow Rate Multiplier (ratio) to 0.9 4) I disabled the Outline feature and generally delete the lines of gCode that do the warm up extrusion.
These changes make the first layer go down slower and a little wider/thicker so that it adheres to the platform very well. I was noticing that the outline and warm-up extrusion generally left buggers or lines of plastic that then caused the early layers to peal off. The changes above fixed that.
One other "trick" I've found useful, is that I position these on the build platform using the "move" function in replicatorG so that they are on the flattest spot of the automated build platform. My ABP is getting pretty warped after ~100 things I printed, and the left side seems to be the flattest part of it, so I generally print things on that side. Good luck!