DDW96, original duplicator of the LV-30T Rocket Engine used in the KSPMBB set, has requested that I remove my tag from his model. Instead of downloading the Starter or Basic sets, please download all parts separately and use the "NoInitials" version of the rocket engine.
This idea's been on my mind for a while now. First of all, my thanks go out to "lilykil" and "DDW96" for the models themselves-- all I did was poke a few holes in them.
This is a set of printable KSP parts with tiny holes for inserting 1/4 x 1/16" magnets (these, specifically: http://www.amazon.com/gp/product/B0012AUU84/ref=wms_ohs_product?ie=UTF8&psc=1). Print the parts, glue the magnets in place, and get your Jeb on!
Jebediah Kerman does not endorse KSPMBB's
Included in the Starter Set:
1x Mk1 Lander Can
1x FL-T400 Fuel Tank
1x LV-T30 Rocket Engine (Please download the "NoInitials" version)
1x Mk1 Parachute
1x Stack Decoupler
2x Radial Decoupler
2x RT-10 Solid Fuel Booster
4x LT-2 Landing Strut
v1.01: Fixed radial decouplers, made landing legs more robust.
v1.02: scaled up slightly because the hole diameters were too tight.
v1.04: Scaled up further for more forgiving tolerances, made radial decouplers more robust. Added a simple tolerance test with three holes: center is with no adjustment, left is -5% scale, right is +5% scale.
I recommend printing "kspmbb_testfit_v104.stl" first, as it will tell you whether or not you need to adjust the other parts' scales to accomodate your printer. The test is simple: print the test at 100% scale and try inserting a magnet into all three of the holes. The middle one, marked "0" is at 100% scale. The left and right holes are sized at -5% and +5% scale, respectively. If the center hole gives you the best fit, then you don't need to make any adjustments to the other KSPMBB parts. If either the left or right hole is a better fit than the center hole, make a note of it and adjust the scale of every subsequent KSPMBB part you print (i.e. set scale to .95 for -5% and 1.05 for +5% scale)
Most KSPMBB parts will require supports, and due to the small size of many of the set pieces it's recommended that you set your infill density to something high. You can press-fit the magnets into most of the holes for a snug fit, but it's best to use superglue to ensure nothing will come loose.
Here are the magnets that the KSPMBB's are designed for (cheap, strong, and infinitely useful): http://www.amazon.com/gp/product/B0012AUU84/ref=wms_ohs_product?ie=UTF8&psc=1