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Re: Cast tooling plate print bed flatness - 7 years ago
Thanks everyone for the feedback. The 1/4" plate would be screwed to the 2020 with flush countersunk screws. The whole assembly would stand off the stainless steel table top by the 3 thumbscrew adjusters. The 2020 would act simply as bridge type trusse to minimize plate deflection along the length of the 2020. The problem for me with a center brace is the silicone heater will be stuck to theby simspeed - Reprappers
Re: 120v Silicone Heat Bed Source - 7 years ago
I found what I needed and placed an order. Bed heater should arrive in a week. Thanks dc42.by simspeed - General
Re: Cast tooling plate print bed flatness - 7 years ago
I'm building an enclosed CoreXY that will use a fixed cast aluminum plate bed with a 120v silicone heater below and PEI on top. The plate dimensions are 825mm x 558mm x 6.35mm. I'm using 3 point thumb wheel leveling for the bed and I'm debating whether or not I need a 2020 frame support for the plate as shown in the picture below. The heat bed I've ordered has 3 heating zones for different sizby simspeed - Reprappers
Re: 120v Silicone Heat Bed Source - 7 years ago
Ok thanks dc42....I'll check them out.by simspeed - General
120v Silicone Heat Bed Source - 7 years ago
Some time ago someone posted a link for a custom silicone heat bed manufacturer. Sorry to ask....but I've searched and haven't been able to find the link. I'd like one that's multi-zoned for small to large prints depending on the print model size. My aluminum print bed is fixed, measuring 760 X 550 mm. I also need it wired for 120V power. I've located mfgs in China but i'd like to find the oby simspeed - General
Re: Dreaming of a Static Motor Arrangement and Less Vitamins - 8 years ago
Here is a link to the Yamaha Orbit Scara robot I'm referring to. The movement of my design is contained within the outer loop of the Yamaha design where the perimeter ring pivot point replicates the outer pivot point (elbow) of the Yamaha center pivot arm. Yamaha Scara Robotby simspeed - Developers
Re: Dreaming of a Static Motor Arrangement and Less Vitamins - 8 years ago
Here is a fixed motor design I call the Scara Hex. The arm motion is a derivative of a center pivot 360° Scara arm device like Yamaha produces, but the drive mechanisms here are moved to the perimeter ring. The red and green rings are driven separately using Nema 23 with overlapping belts for no slip, high torque movements. The rings float on Delrin balls were everything is captured within theby simspeed - Developers
Re: Polar coordinate programming - 8 years ago
Thanks wingmaster....I appreciate you sharing this info.by simspeed - Polar Machines, SCARA, Robot Arms
Re: 3 motor bed leveling - 8 years ago
I finally found your post on the 3 motor bed leveling idea David.... I was thinking of a different one involving micromotors that you also commented on. Having now read your post, I see and agree that we are talking about the same concept. I'd like to talk to you more on that, and generally the idea of using a Duet controller and DuetX expansion board with your configuration of RepRapFirmware foby simspeed - General
Re: 3 motor bed leveling - 8 years ago
Hi Dc42...I do recall reading something about that but can't find it now in your past posts. Please share the link again here so I can go back and study what you proposed then. I appreciate your offer, and I'm very interested in discussing this and more with you relating to my Polar Hex design. Thanks...TPby simspeed - General
3 motor bed leveling - 8 years ago
The round heated bed for my printer design will be mounted to a hexagon shaped 2020 extrusion frame. That support frame will mount to three motor driven carriages (like a delta), each connected to one vertical leg of a delta type chassis. The print head is a fixed polar rotating assembly mounted at the top of the chassis and is non-adjustable for leveling, other than base leveling the frame itby simspeed - General
Re: Polar coordinate programming - 8 years ago
Ok...thanks for the links. I'll follow up with those and see if I can track those guys down from 2010. BTW....I said in my original post I was using a delta chassis...I am and it is. I think I mentioned I'm using motors and belts. The platform will ride on bearings machined into the housing for precision spacing and fit. Thanks...TP.by simspeed - Polar Machines, SCARA, Robot Arms
Re: Polar coordinate programming - 8 years ago
Here are some drawings of my design for perspective...by simspeed - Polar Machines, SCARA, Robot Arms
Re: Polar coordinate programming - 8 years ago
NP Ray... We are the same age so I know the feeling. I appreciate your comments. I'm using a delta chassis; but not the arms and effector. The frame uses OpenBuilds V-Slot vertical 6020 X 1500mm extrusions much as you've shown, with hexagon rather than triangle 6020 V-Slot horizontals at the top and bottom . The six 60° outside corners are 2020 extrusions I bought from Musimi. I'm using powdby simspeed - Polar Machines, SCARA, Robot Arms
Re: Polar coordinate programming - 8 years ago
Thanks (I guess) on your input Ray... Seems strange that your first comment is decidedly negative considering that you know nothing about the design other than what I offered. Considering also that the Polar XY mechanism described above, will bolt directly to the large delta chassis I originally designed for Berrybot hardware I purchased, the commonality between this and a conventional delta desby simspeed - Polar Machines, SCARA, Robot Arms
Polar coordinate programming - 8 years ago
I have designed a printer that uses a combo polar/linear XY mechanism and a conventional Z axis all on a Delta chassis design. I have the option of moving the bed on the Z axis, or leaving it fixed as per a conventional delta, and letting the XY mechanism travel along the Z legs. Either case the bed doesn't rotate, the XY rotates per the drawing. Since this will be an enclosed chamber printer,by simspeed - Polar Machines, SCARA, Robot Arms
Re: 1mx1m hot plate? - 8 years ago
Quotethe_digital_dentist Please keep us updated on your progress. I am particularly interested in the performance of your bed/heater and look forward to seeing video of your machine printing. Thanks! Way to be the bigger man DD....I for one appreciate all that you contribute to the forum. Thanks again.by simspeed - Mechanics
Re: Fired up heat bed - 8 years ago
QuoteJ-Max Hi, I just come to this old topic. I'm amazed by the huge energy consumption of the heatbed : 1800W ! The bed is big but I thought an AC heatbed should heat that up with less power. How do the bed works now ? ++JM Hi J-Max....I have yet to increase wattage to the bed from the initial build so can't comment past that. My only experience with wiring and electrical loads comes from thby simspeed - General
Re: Fired up heat bed - 8 years ago
QuoteSydneyDesigner Hi again Simspeed - I was just wondering how things are going with your 80/20 bed design as I'm close to building mine. Any latest suggestions/modifications? Hi Sydney...the bed design was the best part of the build unfortunately. After putting the motion components in place, I realized my worst fears about the mass and weight of the gantry using cable/belts rather than acmeby simspeed - General
Re: New print surface material? - 8 years ago
QuoteJohn Meacham Out of curiosity, has anyone tried UV curing glue to hold their print surface to glass? The glue is generally good to 180C so should be okay at printbed temperatures. It would be very easy to apply because you can spend all the time you want squeezing the air bubbles out and getting things aligned since it is a liquid before zapping it. I ordered some cheap no name UV glue aby simspeed - General
Re: New print surface material? - 8 years ago
Here's one that goes to 93c....i'm sure there are others rated higher. 93° c ratingby simspeed - General
Re: New print surface material? - 8 years ago
Has anyone considered just spraying a contact glue like 3M Super 77 to the bed and underside of the PrintBite. If the PrintBite is as durable as claimed there shouldn't be a need to remove it in the foreseeable future I would imagine.by simspeed - General
Re: backlash eliminating star - 8 years ago
I chose this Berry design because of his success with the original Berrybot delta. We'll go with it and watch for signs of wear...but my guess is the mini-wheels and bearings will last well into the life cycle of the machine. Thanks for the heads up thought.by simspeed - Delta Machines
Re: Alternative to T-Slot wheels? - 8 years ago
Quotellamatrails While not a before/after comparison, here are some shots of a print done in PLA today: Rick Everything looks sharp Rick....what were the layer settings?by simspeed - Extruded Aluminum Frames
Re: backlash eliminating star - 8 years ago
Quotedougal1957 Fortunatly I don't have the problem so don't need to stabilise it (I use openBuilds Mini V-Wheels on there Vee slot extrusion and use a custom slider block with eccentric spacers to allow for adjustment and use 4 wheels on each carriage (tho that could be reduced to 3 if needed). Dougal1957 ....I'd sure like to see pictures of your v-slot mini wheel carriage set up. I'm usingby simspeed - Delta Machines
Re: Easy build Delta printer - 8 years ago
Very interesting...hope to see more.by simspeed - Delta Machines
Re: Printer Enclosure Build - 8 years ago
Glad you were able to get the pictures to upload. Good application....looks really good. I hope it works out to your satisfaction. Are you planning to insulate the enclosure?by simspeed - General
Re: Printer Enclosure for the Garage - 8 years ago
Try it again BrotherBrown...I'd like to see it. Thanks...by simspeed - General
Re: Alternative to T-Slot wheels? - 8 years ago
If you get a chance, show some of your prints close up so we can see the layer detail. I'm interested in the application of impregnated plastic for the bearing contact. Thanks...TP.by simspeed - Extruded Aluminum Frames
Re: Bigger 3d delta printer size - 8 years ago
I just tried it....the link works fine for me. Sorry... Here is the specs image for my DeltaHex configurationby simspeed - Delta Machines