energetic Wrote: ------------------------------------------------------- > An update to my delta design. I finished the all > laser cut design. Hi! I'm planning to make a Delta bot also.. my friend (Atorox) told me he might be able to cut these pieces from aluminium. Can I use your design? Would it work if cut from 3mm aluminimum? Do you have specs for the ball joints? I'm plannig to bby nite69 - Delta Machines
JohnnyCooper Wrote: ------------------------------------------------------- > I see what you're saying, although in the specific > robot I've linked to's case: the hobby servos I've > played with seem to have decent holding torque > simply as a result of the high gear ratio. > > I can understand why there is a potential for > cumulative error, however since the servo's >by nite69 - General
About your original question; the hole is designed for a 8mm threaded rod. There are nuts that fastens the rods, so making a little bigger holes might not cause troubles. Try it, you'll see.. There are others using cnc to make the vertex parts, for examle, see this:by nite69 - General Mendel Topics
:-D My guess is that the reprap logo is invented from the vertex part ;-) The terdrop shape is because the piece is designed to be printed on reprap and with reprap you cannot 3D print parts that are "hanging on the air".. actually 45 degrees walls are possible -> holes are teardrops ;-)by nite69 - General Mendel Topics
hmm.. I thought Makerbot is an US company and shapeways is European (UK I guess)..by nite69 - Casting and Moldmaking Working Group
QuoteSebastienBailard What are those molds made from, btw? I currenlty only have a mold for the corner. It is printed on Shapeways , info from material: . (hm.. now they are saying "not suitable for molding..", worked for me with vaseline It can also be printed in ABS etc. Edit: I can get CNC milled parts on my hands, so I will concentrate on parts that cannot be milled easily.by nite69 - Casting and Moldmaking Working Group
QuoteLawrence I think your missing the point that with a delta robot there is no need for a Mendel. Well, hopefully so :-). I'm just a bit suspicious about the accuracy, speed etc. facts. But certainly there is some size which can be printed accurately at some speed. If it is even near the mendel size, then we do not need actual mendel. However it is not done yet, so we do not know. If it turnsby nite69 - Delta Machines
How about a mendel repstrap delta robot capable of just printing the Mendel plastic parts? The printing area would not need to be as large as standard mendel. So basicly you only would need to build a Mendel frame, buy 3 servos and an extruder. Fasten the extruder to the top of the Mendel frame, fasten the delta robot with bed to the bottom of the frame. Then extrude the plastic parts with delby nite69 - Delta Machines
Hi! Very interesting topic.. btw, here are some math and C-code to calculate angles to coordinates and vice versa: Moving the bed with delta robot simplifies other design a lot. Fixed extruder.. hmm.. why not several extruders... edit: sorry.. looks like this link is already here..by nite69 - Delta Machines
hi! I opened wiki pages for molding the Mendel parts. Feel free to update it.by nite69 - Casting and Moldmaking Working Group
Actually, this seems to work, but but there are some tricks.. seeby nite69 - For Sale
>I think the idea of using kitchen foil as a release foil was inspired. The >inserts slid out without any resistance at all. >A good enough result to be going on with. Hey, this seems very nice idea.. I'll try it with my shapeways mold as well. Maybe I should also try polyester resin.by nite69 - Casting and Moldmaking Working Group
Hi! I got my mold and this seems to be possile way to get the plastic parts, Of course, if you can have the printed versions, get them. Or if you have a cnc mill, mill them. If you don't, this is one way. At first, shortly how to get the parts: 1. get the mold and polymorph 2. grease mold with vaseline (petroleum grease?). Actually I changed my car's bearing a short time ago, so I had some axelby nite69 - Casting and Moldmaking Working Group
That's good news.. and with polymorph I can test easily; If it get stuck, it can be released by heating up to 60 (I suppose..). Maybe we should continue this conversation here: Still waiting for the mold..by nite69 - For Sale
Shapeways can deliver in 10 days, regardless of the amount of orders (I suppose.) I have first going to test this, there is a lot of things that might not work. btw, the price is lower, 27$ includes European VAT 22%, so the correct price would be around 23$.by nite69 - For Sale
Anyone have any experience on this subject? I think I need some releasing agent to be able to release the piece from the mold. I'm considering honey wax (melting point 65 degrees), parafin (40-60 degrees) or stearin (72 degrees). So the polymorph melts at 60 degrees, the mold can stand up to 80 degrees (shapeways has updated the temp), Which releasing agent should I use? Should the agent be liquiby nite69 - Casting and Moldmaking Working Group
I posted this first to for sale - forum, but this forum fits better.. Hi! I ended up trying to mold the mendel plastic parts. I draw a mold and uploaded it to shapeways.com for ordering. Would there be any interest in this mold, if it ends ups a successfull way to produce mendel? The price will be about 27$ which you can, hopefully, use to produce all 6 corner vertexes? If this is successfull, Iby nite69 - Casting and Moldmaking Working Group
Anyone have any experience on this subject? I think I need some releasing agent to be able to release the piece from the mold. I'm considering honey wax (melting point 65 degrees), parafin (40-60 degrees) or stearin (72 degrees). So the polymorph melts at 60 degrees, the mold can stand up to 80 degrees (shapeways has updated the temp), Which releasing agent should I use? Should the agent be liquiby nite69 - For Sale
Hi! I ended up trying to mold the mendel plastic parts. I draw a mold and uploaded it to shapeways.com for ordering. Would there be any interest in this mold, if it ends ups a successfull way to produce mendel? The price will be about 27$ which you can, hopefully, use to produce all 6 corner vertexes? If this is successfull, I will make molds for the other parts as well. You can see it in Pleaby nite69 - For Sale
buzz Wrote: ------------------------------------------------------- > reprap has a strong history with polymorph. it > was one of the first plastic/s that was considered > ( after hot-glue , I think). There were serious :-D I must admit I thought of hot-glue also ;-) > problems with polymorph, which I think included > it's shrinkage properties, and possibly the fact > thaby nite69 - General Mendel Topics
Hi! If you are planning a mendel - project here in Finalnd, please send a PM. Maybe we can co-operate.by nite69 - Finnish RepRap User Group
I happen to have one 8 inch floppy drive :-D Let's see what it has inside ;-)by nite69 - Reprappers
How about making the interfaces open (or hmm.. I guess they are already open.. but are they well specified?) and encourage people to publish their own solutions for electronics? The design itself should be enought modular so it would give temptation to replace parts of it with better solutions. And hopefully publish the new solution. For example, could the whole exlectronics be replaced with ethby nite69 - Next Wave Electronics Working Group
Polymorph is a plastic that melts in 60 degrees. maybe it could be used to get some kind of booststrap - mendel? Maybe this could also be used as support material?by nite69 - General Mendel Topics
Hey, this seems nice idea; then you could print a cup upside down filled with sugar! ;-) Seriously, actually an interesting idea. Something like this could be very usefull; material which everybody gets easily and is cheap. Personally, I think missing support for support material is the major disadvantage of RepRap. This problem should be solved as soon as possible. I have not yet started to maby nite69 - Plastic Extruder Working Group
Or maybe it should be written here:by nite69 - RepRap Host
Hi! I'm also from Finland.. just planning to make one Mendel, nothing done yet. Some co-operation? Let's buy the plastic parts for one and replicate for the two others? Costs shared evenly?by nite69 - Finnish RepRap User Group