Adventures in 3D printing

[pdentrem]

The Prusa XL has a 14.2” sq build envelope. I started printing the last 2 pieces now. This is the upper section of my smaller telescope and what I am printing is for a larger mirror set.
Pierre

 

[koenbro]

That’s a very nice work envelope. My printer works well but is limited at two hundred mm I believe.

What material are prints shown in the photo? ABS?

Edit: my phone acts weirdly. Placed emoji instead of numbers.

Sent from my iPhone using Tapatalk Pro

 

[pdentrem]

Currently using PET g CF and see if it holds up. The one ring that I assembled just with bolts, not glued yet, today is pretty stiff as it is. Once the steel secondary mirror support structure is build, the rings will have bracing across the diameter at 90 degree. If I find issues, I can try something else. The perimeter, top, and bottoms have 6 layers with 15% infill.

 

[koenbro]

Adding CF to a material is a game changer. I have not used much PET but have printed a few rolls of Nylon CF and it is an excellent material.

 

[koenbro]

I made a holder for my lathe ER40 collet spanner. I think I overcomplicated it, but it does work.

 

[Just for fun]

Nice Job Koenbro

 

[WobblyHand]

I made a holder for my lathe ER40 collet spanner. I think I overcomplicated it, but it does work.

View attachment 513116
View attachment 513117
View attachment 513115
View attachment 513114
View attachment 513113

Good job. I may modify that design for use on my lathe. I have a pair of those wrenches. One is unmodified, and the other I cut down and installed some pins. The pins fit in my ER-40 chuck body. If I can mod the design to fit the modified wrench it would be awesome. Definitely would be nice to get the wrenches out of the chip pan.

 

[koenbro]

Good job. I may modify that design for use on my lathe. I have a pair of those wrenches. One is unmodified, and the other I cut down and installed some pins. The pins fit in my ER-40 chuck body. If I can mod the design to fit the modified wrench it would be awesome. Definitely would be nice to get the wrenches out of the chip pan.

Here is the Fusion 360 parametric model so you can modify it. It is sized for the Rego Fix wrench.

 

[koenbro]

Thingiverse link here. The design uses M4 x 0.7, 10 mm-long screws, and matching heat-set inserts. The attachment to the 8020 profile is with 3/8" long 1/4"-20 button-head screws.

 

[koenbro]

My default material is ABS (specifically ABS-R in Makerbot lingo, with RapidRinse dissolvable support ). ABS printing releases nasty fumes. Although the printer has a HEPA filter and an active charcoal filter, I was thinking of evacuating those into the attic and outside of the house's living space air.

So I printed two, one on the top lid and the second will be attached to the drywall in the ceiling in the closet where the printer lives; they will be attached with ribbed 4" flex conduit.