|
|
Post by piscanc on Jan 16, 2016 22:06:57 GMT
My intention is to have minimal added weight and overkill on cooling if needed. It´s intended to be used with 2 fans, connected directly or on ducts. Since i don't draw parts (yet) i relay on help from others. This part is drawn by a friend in Maya, so finished part has to be printed in 10X scale. We first started with model of assembled spider, and than worked our way round.    We quickly realized that working round probe will be pain, so we scratched that. |
|
|
|
Post by piscanc on Jan 16, 2016 22:20:04 GMT
  top cover almost finished few tweaks and it will be done. bottom holes need to be bit bigger to clear screws, hole for cables needs to be bit bigger and one relocated, but for test print it will do. |
|
|
|
Post by piscanc on Jan 16, 2016 22:56:03 GMT
  Sliced with slic3r test print shows that some walls are too thin. But in general i´m happy how it came out, considering may calibration of printer is horrible atm. additional hole on outside duct is needed, so inside duct can be fixed. Or it would fit 30mm inside on additional peace to slide on inner duct, for hotend cooling if one duct is used. So more possible combinations: 2 ducts 30mm + 60mm one inside other 1 duct 30mm fan + 60mm duct 2 fans 30mm fan + 50-70mm fan (yet to be tested if it could fit) Attachments:
|
|
|
|
Post by Ryan Thompson on Jan 17, 2016 2:54:23 GMT
What software is used for designing the part? Very nice shape.
|
|
|
|
Post by JohnOCFII on Jan 17, 2016 3:13:49 GMT
|
|
uzi3l
New Member
Posts: 44 
|
Post by uzi3l on Jan 17, 2016 6:56:40 GMT
was it intentional that the effector is upside down or is that only for sizing cause of the auto level mount in the way?
|
|
|
|
Post by piscanc on Jan 17, 2016 9:18:46 GMT
it was intended to be used on pro spider, but since that one is on the printer...  but it could be used on plastic one too, it will need some "sanding" to clear space for mounts... Because my friend is using Maya as design tool, measurements are not 100%. It's not intended to be used in this kind of applications. Output file is .obj, witch is printable but measurements get screwed so it needs scaling 10x. This happens with formats a lot. But from start tool is designed for artists not parts. |
|
|
|
Post by piscanc on Jan 18, 2016 17:27:56 GMT
Top cover, fixed some small things. anyone who wants to test fit, let me know. Attachments:
|
|
|
|
Post by greenengineer on Jan 18, 2016 21:18:50 GMT
Piscanc, I'd like to try this on my GS2 Pro spider. I am also interested in adding a mount for a pen (see Alex's Calibration Technique), and maybe some LED's as well. More than happy to help with the design. |
|
|
|
Post by piscanc on Jan 18, 2016 22:21:22 GMT
led strip or small bar could be glued on bottom of bottom cover (witch is still in drawing board).
but I haven't think of additional things to add, since it would add to weight and bulk.
that could be made as separate peace easier.
double clamp (one square for spider, and one side round with split)
with clever slope design, no support model could be made.
|
|
|
|
Post by piscanc on Jan 18, 2016 22:23:02 GMT
Piscanc, I'd like to try this on my GS2 Pro spider. I am also interested in adding a mount for a pen (see Alex's Calibration Technique), and maybe some LED's as well. More than happy to help with the design. do you have my mail? how can I send files to you? |
|
|
|
Post by greenengineer on Jan 19, 2016 0:28:26 GMT
Piscanc, I'd like to try this on my GS2 Pro spider. I am also interested in adding a mount for a pen (see Alex's Calibration Technique), and maybe some LED's as well. More than happy to help with the design. do you have my mail? how can I send files to you? I've message you. Also I'm curious about your concerns with weight- is that really an issue? I am considering adding this counter-weight system, as soon as I can find his CAD files (I find the print-head dropping to be a pain- even after changing Marlin and the finished print G-Code). It seems this would make weight no longer an issue (at least in the vertical direction). Are you trying to get as fast acceleration as possible? |
|
|
|
Post by piscanc on Jan 19, 2016 7:34:57 GMT
it not such issue with short prints, but big tall ones are quite challenging because of weight.
I would like to print as fast as possible, since it already takes long time to do. Weight and cooling seems 2 most important areas for improving that.
|
|
|
|
Post by greenengineer on Jan 19, 2016 20:11:38 GMT
it not such issue with short prints, but big tall ones are quite challenging because of weight. I would like to print as fast as possible, since it already takes long time to do. Weight and cooling seems 2 most important areas for improving that. Could you explain? I don't see how the position of the head in the vertical direction affects the weight. I am printing the cooling prototype now 10X scale. It seems like the fan will end up just blowing the hot air from the extruder onto the part. All the fans I have seen have been aimed either upwards to blow hot air from the extruder away from the print, or pointed downwards to deliver ambient cooler air (not from the extruder area) down to the print. Here is an example where the air is delivered to the print and extruder head separately. What do you think? Also are there CAD files you can send me as well? Autodesk can't open the .obj files. |
|
|
|
Post by piscanc on Jan 19, 2016 20:31:30 GMT
Could you explain? I don't see how the position of the head in the vertical direction affects the weight. Weight with combination of height and fast movements and light frame don´t end well. I almost tipped my printer during Bunny´s PSU case. Combination of fast movements from/to print point,relatively small print area and move to new location in FAST pace. It triggered resonance tipping action. Lighter moving parts, heavier frame -> higher resonance freq. Heavy moving parts, light frame -> bad news:) On cooling: Yes, small fan in blowing hot air on printed part, but it´s primary function is to keep hotend throat's cool (so you don´t get clogging, instead of stock fan), Air from it should not make any significant cooling effect on printed part. You are still missing bottom half see first photo. Air from bigger diameter is intended for layer cooling. |
|
