So kapton would not be optimal belt material after all. How about teflon baking liner? These are teflon coated fiberglass that are rated for -190 - +260 centigrades. My plan was just to use thread to sew the belt together and move belt just back and forth not all around.by atorox - General Mendel Topics
I think I understand the math and I understand that neither tension nor vacuum is able to keep belt straight when stressed but could this conveyor belt with heated bed be used to get usable pieces that have warping like pieces printed on unheated bed?by atorox - General New Machines Topics
Because this idea bothered me too much and there was no comments for few days I thought that perhaps this was wrong forum for it :-(by atorox - General Mendel Topics
rhmorrison Wrote: ------------------------------------------------------- > WOOD does not contract. > > The plastic exerts force on the kapton tape/film > because it is contracting as it cools. The use of > the heated bed reduces (but does NOT eliminate) > this effect. > > WOOD being milled does not exhibit this > characteristic! How true ;-) And still I can't gby atorox - General New Machines Topics
I was thinking having something like of two rolls with sprockets on edges for some tension for feed an low vacuum on the table to keep kapton smooth. I would like to try making conveyor belt mendel either with or without vacuum but getting big enough piece kapton and the holes for sprockets in it probably will bee too difficult.by atorox - General Mendel Topics
I have played around with wood CNC mill that has a vacuum table and it is enough to keep milled material on its place while milled at least in case of wood, plywood, particleboard and MDF-board and vacuum tables are used all the time in wood industry and I know that they have used vacuum table while milling film faced plywood but my experience has been that vacuum is not enough for plastic if youby atorox - General New Machines Topics
rhmorrison Wrote: > > I don't think the sprockets will be enough and an > aquarium vacuum pump will certainly not be > enough! > > Take a look at nophead's HydraRaptor blog entry > Suck it and see. I have seen this but if the belt is kept in tension with sprockets and axles I was hoping that a lower vacuum would be enough to keep the belt flat. And on the other hand the vby atorox - General New Machines Topics
rhmorrison Wrote: ------------------------------------------------------- > As already mentioned before this would of course > require that the bed be twice as long in the Y > direction as the height of the pieces that you > want to print. Mendel is designed for 200 mm by > 200 mm. With the kapton conveyor belt you would > have to change this to 200 mm by 400 mm in order > beby atorox - General New Machines Topics
Hi, I posted this earler on Mendel forum. My mendel is still in pieces around the world ;-) But an idea occurred to me while reading this blog: charlespax.com How about replacing the Y-axis with kapton conveyor belt on a static heated bed so that the conveyor belt movement replaces the Y-axis movement and when the piece is ready moves the ready piece away so that mendel could be used for contby atorox - General New Machines Topics
Hi, My mendel is still in pieces around the world ;-) But an idea occurred to me while reading this blog: How about replacing the Y-axis with kapton conveyor belt on a static heated bed so that the conveyor belt movement replaces the Y-axis movement and when the piece is ready moves the ready piece away so that mendel could be used for continuous production. And even be used to print larger tby atorox - General Mendel Topics
Some progress on milling and blog ;-) atorox http://finreprap.blogspot.com/by atorox - General Mendel Topics
VDX Wrote: ------------------------------------------------------- > ... 8 to 9 percents shrinkage sounds needing a > complex calculating and after-treatment for > fabbing fitting geometries Yup that can bee a problem and for multipart constructions would need some fitting and tooling. But I think that with several test runs some basic rules for calculating close enough right size canby atorox - Paste Extrusion Working Group
Hi, I have been toying with idea of getting printed metal parts with ArtClay. There is a variant of ArtClay that can be diluted with water to wanted consitency. 650 Paste type The only difference between Paste type and Clay type is the amount of water portion in the mixture. Paste type comes in the consistency of melted ice cream and you should only transfer the amount needed from the jar to aby atorox - Paste Extrusion Working Group
SebastienBailard Wrote: ------------------------------------------------------- > atorox, cool! > > I'll start a wiki page on that for you. cnc > fabrication of mendel seems pretty important. Vik > Olliver is working on it as well. > > Also, is it ok to move this to the Mendel forum? > I wrote same message first on mendel forum ;-) > Lastly, I'd suggest MDF or plby atorox - Finnish RepRap User Group
Hi, I am trying to repstarp mendel by milling the plastic parts with a cnc wood router. I started just a blog: http://finreprap.blogspot.com/ I have started to do a DXF files of some parts to this is the first mendel_parts.dxf There are 4 parts in this file each on own layer. I have done these so that I can import them to the CAM and make programs for the CNC. If I get done more files I willby atorox - Finnish RepRap User Group
Hi, I am trying to repstarp mendel by milling the plastic parts with a cnc wood router. I started just a blog: http://finreprap.blogspot.com/ I have started to do a DXF files of some parts to this is the first mendel_parts.dxf There are 4 parts in this file each on own layer. I have done these so that I can import them to the CAM and make programs for the CNC. If I get done more files I wilby atorox - General Mendel Topics
Hi, Can You make plans to DXF? Then I could import them on our CAM and mill the parts with CNC. And even try to convert them metric.by atorox - General Mendel Topics