Sometimes I design a piece that utilizes a low stress joint where a lightweight bolt made from plastic will work fine.
However, I would still like to maximize the strength of these printed bolts.
As you know, printing bolts is difficult unless they are printed vertically. The problem is that due to the layering direction when printing vertically, this makes for VERY weak bolts. Ideally, plastic bolts printed horizontally, so that the layers run lengthwise instead of diagonally across the bolt or threaded rod produces threaded pieces that are quite strong.
Here are the best two solutions I have found to date for this dilemma.....
1). Create a small flat spot on one side of the bolt. That gives the printer a solid place to start the print and does not significantly compromise the bolt.
2). Print a threaded, straight rod, and use a die to add the threads (works well, but requires tooling with every bolt printed)
Can anyone come up with a more elegant solution?
BTW...this is with a regular FFA printer, .4mm nozzle using PLA or PETG