SoliForum - 3D Printing Community — Looking for Solidoodle 3 aluminum bed support

Re: Looking for Solidoodle 3 aluminum bed support

null@example.com (Dan_E) — Sun, 24 Mar 2019 23:35:44 +0000

That's some serious hairstyling!

Re: Looking for Solidoodle 3 aluminum bed support

null@example.com (heartless) — Sun, 24 Mar 2019 14:26:01 +0000

for the record, the lion prints like this..

and looks like this when the outer wall that supports the "hair" is removed..

Re: Looking for Solidoodle 3 aluminum bed support

null@example.com (heartless) — Sun, 24 Mar 2019 14:23:30 +0000

Dan_E wrote:

Wow! that is truly an amazing print - done on an SD2 or 3? Any "finishing"?

done on an SD4 (basically a 3 with a factory enclosure) and other than styling the mane, no other post print processing was done

Re: Looking for Solidoodle 3 aluminum bed support

null@example.com (Dan_E) — Sat, 23 Mar 2019 20:33:51 +0000

Wow! that is truly an amazing print - done on an SD2 or 3? Any "finishing"?

Re: Looking for Solidoodle 3 aluminum bed support

null@example.com (heartless) — Fri, 22 Mar 2019 22:56:38 +0000

the layer heights have more to do with the number & size of the steps of the motors more than the accuracy of the finished part.

because of that 5/16" threaded rod on Z, (Not metric!) the typical metric layer heights of 0.3, 0.2, etc, do not work as well and can lead to weird layers.
Trust me (and the many others that figured all this out prior to me) that the layer heights i gave you above just work better - unless you are going to go to the trouble of swapping out that threaded rod for a metric one. (not really worth the hassle, imho, but it is an option)

this was printed using the 0.2963 layer height.. and it is about as flawless as you are going to get on an SD..

Re: Looking for Solidoodle 3 aluminum bed support

null@example.com (wardjr) — Fri, 22 Mar 2019 19:02:22 +0000

Not exactly how that works

Re: Looking for Solidoodle 3 aluminum bed support

null@example.com (Dan_E) — Fri, 22 Mar 2019 16:39:29 +0000

heartless wrote:

.....also, due to the SAE 5/16" threaded rod, do not use the standard 0.3, 0.2, etc as layer heights.. use 0.2963 (0.3 equiv), 0.1905 (0.2 equiv), etc (search the forum for more info). These are optimal layer heights for the SD printers.

Is this to get an accurate finished Z height? I did a print of 2 tubes Dia 27.0 x 80.0mm tall with the defauly Slic3R settings of .3 layer and the print measured 80.06 tall, I thought that was pretty good tolerance. Also the dia was very good too - concentricity within 27.0 +/-.01....

So, theoretically the .2963 layer should reduce the height of an 80mm part to ... (80/.3)x.2963 = 79.01? I this a variable I should figure out for my own printer from doing a test part?

Re: Looking for Solidoodle 3 aluminum bed support

null@example.com (Dan_E) — Fri, 22 Mar 2019 15:43:03 +0000

carl_m1968 wrote:

I'm not sure what the issue is with tho holes? The only holes that matter are the ones for the smooth and threaded rod. The rest are up to you since you are having this custom made. You make the holes where you need them. ............

Carl, I just wanted to get the new bed support design as close to the original as possible. In hindsight, I think my digital caliper measurements should be within 0.5mm, so close enough for rock 'n roll.

The X and Y rods are 8.0mm, but the Z rods at the rear are .375" - interesting that they mixed Metric and ASTM components! So for the new X & Y carriages I need to get LM8UU bearings, but for the Z rods are just .375" bronze bushings OK?

Heartless, thanks for the carriage build parameters - the build time will be long with 80-100% infill, but its a one time build I hope.

One more question: (hope I'm not boring you guys!) The Z riser rod appears to be 5/16 UNC rod? or is it M8? - I have read somewhere on here that people were swithching this to a M3 thread - is there an advantage? is it the finer thread pitch?

Re: Looking for Solidoodle 3 aluminum bed support

null@example.com (carl_m1968) — Fri, 22 Mar 2019 11:54:38 +0000

I'm not sure what the issue is with tho holes? The only holes that matter are the ones for the smooth and threaded rod. The rest are up to you since you are having this custom made. You make the holes where you need them. Now if you are trying to reuse a part from your machine then just use that part and measure it to get the location of the holes. Not sure why you want someone else to tear down and measure their machine to get dimensions that may not even work for you. You are having the part custom made so make it yours and put the holes where you need/desire them.

Re: Looking for Solidoodle 3 aluminum bed support

null@example.com (heartless) — Fri, 22 Mar 2019 11:49:04 +0000

as long as the bed screw holes are within a mm or 2 they should be fine. The threaded rod & smooth rod holes will be more important.

for printing the carriages, you want high infill for strength.. no less than 75%, most will say 100% - with a minimum of 3 perimeters/shells

also, due to the SAE 5/16" threaded rod, do not use the standard 0.3, 0.2, etc as layer heights.. use 0.2963 (0.3 equiv), 0.1905 (0.2 equiv), etc (search the forum for more info). These are optimal layer heights for the SD printers.

Re: Looking for Solidoodle 3 aluminum bed support

null@example.com (Dan_E) — Fri, 22 Mar 2019 02:26:50 +0000

Umm..... Yes, I have done my best to measure the key mounting locations with a digital caliper. However, if someone had their bed support out for some reason and happened to accurately dimension it, it would be nice to get a double check.... Having said that I am confident enough that my dimensions are accurate enough to get a quote from a machine shop to have the pieces NC cut from CF sheet.....
The CF bed support project is not a firm "GO", it will depend on the machining cost mostly....
The wooden one is not working badly, it just seems to me to be a bit 18th century....

In the meantime, I have some "fresh" ABS and the test prints are coming off flat and quite accurate. I have a E3D-V6 full metal with bowden ready to assemble and will be installing that shortly. I will be printing off the Lawsy carriages. (anyone have a Slic3R profile for that to reccommend?)
Next upgrades: MK7 extruder - on order, then a 5mm alum bed with Calidum heater....
Then will see how the printing has improved and go from there.

Re: Looking for Solidoodle 3 aluminum bed support

null@example.com (heartless) — Fri, 22 Mar 2019 00:00:42 +0000

the holes would need to match the layout on your bed.
they are centered side to side - if that helps any.

Re: Looking for Solidoodle 3 aluminum bed support

null@example.com (Dan_E) — Thu, 21 Mar 2019 23:40:23 +0000

Ok, so looks like no-one is willing to part with an aluminum SD3 bed support, so I am planning on building one out of 3mm carbon fibre. I have a Solidworks model I made but would like a fully dimensioned sketch of the hole locations if anyone has had theirs apart and dimensioned it.....

Re: Looking for Solidoodle 3 aluminum bed support

null@example.com (dubbsd) — Fri, 15 Mar 2019 22:07:24 +0000

you are talking about the humidity. at this time in the humidity in the room my printer is in is 52%
I have more problems with filament than corrosion. ( I live in north west FL. about 15 miles from the beach.

dale

Re: Looking for Solidoodle 3 aluminum bed support

null@example.com (Tin Falcon) — Fri, 15 Mar 2019 10:15:31 +0000

if using rivets use aluminum. nuts and bolts stainless is fine but more expensive to purchase. any steel aluminum connection will corode . but only in damp environments usually 3d printers are kept clean and dry.