Curling comes from hot plastic contracting on top of cold plastic, repeated over and over. I think this would not do anything one way or the other. The idea is that the added heat is localized to melt a small area but is not sufficient to allow softening once diffused beyond it. Re. lack of detail: This would of course reduce detail, it'd be a kind of anti-aliasing. The idea is to remove theby Infallibel - Mechanics
I have an idea I plan to test out for which I would like some feedback in case already tried... I want to apply localized heat around the perimeter of each layer to cause the layer lines to smooth out from surface tension. Obviously there is lots of residual stress in parts so a big heat gun does not work so well, but I think this might work if the heat application is sufficiently fast and locaby Infallibel - Mechanics
Hello, Away from 3d printing community for awhile, but recently started a job where it would be real nice to make big parts with limited detail fast. I've been researching what the speed limits are, and to my understanding the primary limit to higher speed is control of the extrusion process, rather than accurate positioning of the extrusion head. With too high a speed, it appears difficultby Infallibel - Mechanics
Nice I really like the wire control job, looks a lot better than mine. Just to be sure, are my thermistor and heater circuits correct?by Infallibel - RAMPS Electronics
Hello, A team at school and myself are building a 3d printer for a competition. I've built and used RAMPS myself at home, and figured we could use the same in our case, except that we plan on using higher power steppers for a bigger/potentially faster machine (NEMA 23s in 14-20kg-cm range). Therefore I'm thinking of duplicating the heater and thermistor circuits and simply passing the step sigby Infallibel - RAMPS Electronics
I don't have a good list. When I tried the first time I realized that the headers were under-rated and so then I mostly just bought stuff from the RAMPS website. Honestly the DIY kit is a pretty good deal they are not charging a huge premium.by Infallibel - RAMPS Electronics
I got a heated bed for my birthday in november. Just now finishing school and need to figure out a mounting solution. It seems there is not a standard way to do this, but I like the idea of clamping on the piece of glass. How would this sequence work?: Top to Bottom Glass rectangle cut to size clamped to . . . Prusa Heated Bed PCB, followed by . . . 2-3 cut to size pieces of cardboard from Hby Infallibel - General
I should update this and let anyone looking at this list know that they should not use it. I know for a fact some of headers are not rated for a high enough current, and some other components may be underrated as well.by Infallibel - RAMPS Electronics
I'm in the process of gathering parts for a Prusa and was thinking about the differential contraction/curling problem. I don't know if I understand the problem correctly, but it seems the issue is that each new layer pulls together the one below it, because it is deposited at a higher temperature than that of the lower layer and therefore contracts more, introducing residual stress and accumulatby Infallibel - Polymer Working Group
Thanks very much for the feedback. After I discovered Kysan's $100 minimum purchase requirement, I went with these 5.0kg*cm motors: and also a pair of dial calipers, which I thought I should have.by Infallibel - General Mendel Topics
I thought getting the right motors would be straightforward but after studying the requirements a bit I don't think I have all the necessary knowledge. I intend to build a Prusa with the RAMPS A4983 stepper drivers. One issue is that the drivers appear to operate from 8-35V while many of the motors (such as that I linked) have lower rated voltages. The stepper motor article on the Reprap wikiby Infallibel - General Mendel Topics
I was about to use one of the US lists above but after reading about the underrated capacitor I thought I should try to go through the list myself just to be safe, as well as learn a thing or two. I recently ordered a v1.3 board and used the component list from the Ultimachine DIY Kit (http://ultimachine.com/content/ramps-diy-kit) to make a Mouser parts list (attached). I know very little aboutby Infallibel - RAMPS Electronics
A friend and I are looking to make a RepRap and are a bit overwhelmed by the diversity of designs out there. I would very much appreciate some recommendations based on our skill levels, goals, and resources: Team Skills: Woodworking, Mathematics/Physics/Programming (B.S. in Engineering Discipline level), Limited CNC milling experience Goals: Developing hands-on mechanical and electrical assembby Infallibel - General