Re: Fan question
Thanks, I will start without, as I always print PA on my Orca without and I don't know what i miss "-)
View ArticleRe: Fan question
It really depends what you intend to print. I have always found small or pointy parts come out much better with a fan blowing air over them. I've always figured that they are easy to fit and can't...
View ArticleRe: Delrin ball carriage for mini kossel question
As a participant in the above thread and person who tried the 2020 variant posted, let me post my opinion that the concept was good but has issues in real life. They needed constant attention to keep...
View ArticleRe: Cherry Pi III Is Available
Hey all, Just thought I'd pop my head in and say hi as I've started collecting parts to build my own Cherry Pi III. It'll be my first 3D printer, although I've backed The Micro on Kickstarter. I'm...
View ArticleRe: Delrin ball carriage for mini kossel question
QuoteA2 Read this link, some modifications were made. 3D printed linear motion carriage now with adjustable preload [groups.google.com] Is the two piece carriage design the mod that you are referring to?
View ArticleRe: Delrin ball carriage for mini kossel question
Quotevreihen As a participant in the above thread and person who tried the 2020 variant posted, let me post my opinion that the concept was good but has issues in real life. They needed constant...
View ArticleRe: Delrin ball carriage for mini kossel question
For wheels check out deltaprintr.com I think they're kit is like ~$20 for a set.
View ArticleRe: Delta design considerations/theory
- What bearing options do people use for the arms and what are their tradeoffs? (I've seen ball bearings and magnets, but I haven't seen any discussion on WHY some of these designs offer desirable...
View ArticleRe: Delta design considerations/theory
I've tried all three options, Traxas, magnets, two versions, magnetic cup and steel ball, steel cup and magnetic ball and my current preferred option which is steel ball in printed cup held together...
View ArticleHow critical is the accuarcy of the different arm lengths ?:S
Hi while building my Rostock Mini (from [www.thingiverse.com]) I needed to glue the carbon rods to the Traxxas U-Joints. After glueing them in it raised a question. How critical is the accuarcy of the...
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Re: Delrin ball carriage for mini kossel question
Pic's to generate ideas.... 3d printed cube profile ball bushing [www.thingiverse.com] I would use multiple small steel bearings with 1 Delrin bearing riding on the steel bearings, and the Delrin...
View ArticleRe: Delrin ball carriage for mini kossel question
QuoteRDM6 I need a little clarification on terms. Is V-slot the same as 20 x 20 mm rails? V-slot is a custom 2020 extrusion, where the slot is V-shaped and not a straight cut. It was designed for...
View ArticleRe: How critical is the accuarcy of the different arm lengths ?:S
Quoteianmcmill +/-1 mm (measured with double meter stick) First, I would advice you to use a large caliper, and if you don't have such a tool, a simple tape measure. Second, if you look to several...
View ArticleRe: How critical is the accuarcy of the different arm lengths ?:S
My calipers won't measure this far. 153mm at most. A simple tape measuer won't be more accurate than this yardstick/zollstock. I epoxied the u-joints. So it's easier to order new Traxxas u-joints and...
View ArticleRe: How critical is the accuarcy of the different arm lengths ?:S
It is extremely critical. If they are not exact, the machine will suffer from mechanical effects. My first build had this problem and if you moved the effector/platform near the tower of the arms that...
View ArticleRe: How critical is the accuarcy of the different arm lengths ?:S
Very comprehensive explanation ! Thank you ! The method with the screw is a really good. I have seen this in the Rostock Mini Pro build. I used 2 component glue. Breaking stress at approx. 1900N/cm²...
View ArticleRe: How critical is the accuarcy of the different arm lengths ?:S
Glad I could help! Good, you already have a jig. Magnets also work and are great for holding the metal traxxas ends to the jig, and they allow for small precision changes. A pack of N35s. The best...
View ArticleRe: How critical is the accuarcy of the different arm lengths ?:S
honestly if you get a piece of wood that is a few cm longer than the rods your trying to build you can make them identical. in the wood drill two holes precisely measured and use some screws or two...
View ArticleRe: How critical is the accuarcy of the different arm lengths ?:S
Another method would be to print out a jig with attachments for the ball joints with exact distances for the carbon rods. If I think about it, the carbon rods can even be shorter (by 1-2 mm) but...
View ArticleRe: How critical is the accuarcy of the different arm lengths ?:S
The best approach is to use right threaded screw on one side of a rod and left threaded screw on the other. Glue the screws to the rod. Then screw the ball joints at the screws. This allows you to...
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