<div dir="ltr"><br><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Very interesting. Looking at the lack of detail in 3D printed<br>
objects, I've always thought that 3D printers would be useless<br>
for parts that must have precise dimensions... like press-fit<br>
knobs.<br>
<br>
Is this for a D shaft or splined shaft ?<br></blockquote><div><br></div><div>This knob is for a fine splined or smooth shaft. </div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<br>
How does it fit ? Loose ? Tight ? Just right ?<br>
<br></blockquote><div><br></div><div>It fits snuggly. On the splined shaft it will come off with some effort, on the smooth shaft it will come off with over-enthusiastic knob twiddling.</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
Which make and model is the printer ?<br></blockquote><div><br></div><div>I'm currently using a Prusia i3 Mk2. 0.4mm tip, PLA 200 C on the extruder, 60 C on the bed. 0.09 mm layers. Printed with a raft.</div><div><br></div><div><br></div><div>> <span style="font-size:12.8px">They look good! Did you post this on reddit the other day?</span></div><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">Thank you! I did not. I actually avoid Reddit due to some pretty bad experiences.</span></div><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">> </span><span style="font-size:12.8px">I once saw such side walls in modular shape so that you could mount 3 together to get a bent 3 panel system like the moog mother triple module... but I didn't save the link... :-(</span></div><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">That's my next rail end-cap project. Probably a couple months down the road when I fill up the 84HP that I have now.</span></div><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">> </span><span style="font-size:12.8px">when you need precise dimensions you can also use the 3D print for the rough size and then post process it. e.g. I usually print holes undersized and then drill them to final size later. so e.g. if you need a press fit on a round shaft, print to 5.5 and drill to 5.9 for a 6mm shaft.</span></div><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">I think it depends on the printer... For example, in the model for the knob, the hole is 5.95 mm and it fits nice and snug. On the rail end caps I made a couple days ago, the holes were half a mm larger than the machine screws and countersunk even and I had no problems sliding the screws through the holes at all. YMMV</span></div></div></div></div>