Re: LISA Simpson
The Dremel or a router is going to be a *very* noisy beast on long jobs. There are air cooled variable frequency drive induction motor driven heads that apparently are a lot more quiet....
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Is it worth looking into threadless ball screw designs again for cost effectiveness at this scale? [www.thingiverse.com] [www.youtube.com] [www.youtube.com]
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@jason.fisher: It is worth a look. However, I won't trust it until I build a test axis. I found a professional version and they claim that the forward pitch vs the backwards pitch are within 2% of...
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Re: LISA Simpson
@A2 I only have the ability to do soft nickel plating . (hard nickel plating is quite toxic) I will be putting first coat of copper under the nickel, copper can be built-up as desired. I think for the...
View ArticleWater-jet cut delta?
I would like to build a delta reprap, fabricating as many of the components myself as possible. I was wondering if anyone could point me in the right direction/engage in spirited debate about what...
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Re: I'm stuck: Trying to set up Diagonal Rod Arms
Thanks, My sideways calculating came to a rod length of around 200mm. That was based on taking the image provided and knowing the build radius. I saw that the arms were 30 degrees. I then drew the...
View ArticleRe: I'm stuck: Trying to set up Diagonal Rod Arms
RTurnock, I measured all info provided real world.. I have not assembled my rods yet. That was what I was trying to determine. I have 150mm CH tubes. But my metal ball ends are on 1.5" 6/32 screws. So...
View ArticleRe: Water-jet cut delta?
No debate needed. It sounds like you have the tools, material, and a plan. I forget the link but someone around here has made a delta frame from foam core PVC. Obviously you will have to buy the...
View ArticleRe: Water-jet cut delta?
Let me preface by saying that I really don't fully understand some of the geometry involved in a delta yet, so I don't understand why some of the items (like ball end jointed rods) are used in them....
View ArticleRe: Water-jet cut delta?
The ball joints are needed because the arms don't stay in one plane. Many people won't agree with me but I think you can fabricate your own rails. I would curve the sides of the PVC rail to match some...
View ArticleRe: Water-jet cut delta?
Wow, thanks nicholas.steward! I'm just starting to look at what is possible with the water-jet. A friend of mine is getting it for a rather adventurous business venture, and I will likely be the one...
View ArticleRe: Water-jet cut delta?
You need to do a lot of reading on the forums. Watch videos. I was interested in 3d Printing almost 3 years ago and have been researching. Then I saw the BerryBot early this year. I eventually decided...
View ArticleRe: Water-jet cut delta?
disneytoy, thank you for the encouragement. I had thought about doing just what you suggest, although I was thinking about going the printrbot simple to 3DR "Simple" route. I still may. I'm interested...
View ArticleRe: LISA Simpson
Okay, I was going to try to line out the answers to a lot of the above questions but I started getting bogged down trying to organize it all. So I will boil it down to how to scale the printer. I...
View ArticleRe: LISA Simpson
@nicholas.seward, 4 bearings/joint: With the longer arms, wider cross section of the arm (50 mm), soft materials, offset arms, warm temperatures, the narrow width of one 608 bearing in a shallow...
View ArticleRe: LISA Simpson
@A2: I think this will introduce a bit more play into the system instead of removing it.
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About the arms ... How about printing a set of arm ends and putting them on pieces of: [www.mcmaster.com] Either a chunk of the square stuff, or two pieces of the round stuff. As long as it's not to...
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@uncle_bob: As you mention there are lots of options. Whatever you do you need to test it out and be 100% positive there is no play. BTW, PVC has the necessary mechanical properties and is cheap and...
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It's the combination of zero play / all 3 same length / bearings in the same plane that I keep going through. Glue is great for zero play / not so great for adjustment. Clamps are ok for play / ok for...
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