o_lampe Thank you for your critical observations. Quoteo_lampe From the looks I'd have made the corner brackets thicker. There are a few parts which look too thin and fragile and hard to print. Corner brackets were thicker until I came up with "joint brackets" design in Piper 1 which has moved to Piper 2. All parts are printed without support, there is a need to file off some overhangs in "archesby piper3d - CoreXY Machines
This is self-replicating (or partially self-replicating) machine. CoreXY design with the upsidedown motor orientations - so no crossing belts. Based on US EMT conduit frame and gantry (working on European or UK version at the moment). It has a stationary bed so is relatively safe to use 120 or 220V heating pad. It may have single or dual Bowden extruder. Printable files are at Instructions areby piper3d - CoreXY Machines
dasflux, You are absolutely correct. Initially, I have made MPCNC for myself. Than Piper 1 came out. There were multiple updates to the projects since my last post. - The new version 2 of Piper 1 was published: For US https://www.thingiverse.com/thing:2966295 For UK and other countries with 20mm OD conduit https://www.thingiverse.com/thing:2999885 - Metric screws were added to BOM at https://pby piper3d - General New Machines Topics
Have uploaded my version of Greg Wade's extruder . Running 4 of those on my printers. May be used as direct extruder or Bowden. Includes F360 file so you guys may continue improving it.by piper3d - Plastic Extruder Working Group
The domain name was cleared with Google and Norton. it is possible to use http://piper3dprinters.com now. Reverting back to Matt's funny video: https://www.youtube.com/watch?v=JHx4f_eAK4Iby piper3d - General New Machines Topics
My piper3dprinters dot com website was hacked and it is down at the moment. Please go through Thingiverse or to the temporary website: . I am in the process of restoring the main website.by piper3d - General New Machines Topics
Check this video by Matt on "Inside The Mind Of Matt" channel: He is assembling largest Piper 1 printer yet, with 500x500x500 build volume. (my main website piper3dprinters dot com is not operational at the moment due to hackers attack)by piper3d - General New Machines Topics
few more pictures of the same machine:by piper3d - CoreXY Machines
Maybe a related read: It points that friction loss is a) proportional to the length of pipe b) proportional to the viscosity of the liquid and c) proportional to square root of velocity for nonlaminar flow. d) for laminar flow, it is proportional to velocity. So you want to have a shorter length, lower viscosity (may be higher temperature) and most of all eliminate c. You may achieve laminaritby piper3d - General New Machines Topics
Great team @cinciclif Nice experiment. >With 1.75 mm ABS filament and a 0.4 mm nozzle, we observed max flow rate at 3.0 rev/sec motor speed, 23.7 mm/s filament feed rate, 204.8 cm^/hr flow rate. This is a mere 20% improvement vs the Volcano test. We continue to see the same failure mode with the knurled hob wheel slipping on the filament. We tested a theory that the loose fit between our diby piper3d - General New Machines Topics
Thank you. If you do not want to spend time on design (what I doubt ) you may build MPCNC, which is good router CNC. I am using it to cut bed plates. But it will be interesting to see your design. With M3 or M5 dilemma go for M4 . >you can get away with 4 bearings per slider Unfortunately 4 bearing not working. With 4 bearings rollers may turn away from the pipe, so at least 5 bearings are reqby piper3d - General New Machines Topics
Thank you. Agree it is a little heavy. But it may be easily converted to 2 motors per X and Y axis to overcome any doubt. I am running current design with: DEFAULT_MAX_ACCELERATION 2000 for X and Y DEFAULT_ACCELERATION 1000 DEFAULT_XJERK 9.0 and it is running fine with a single motor for X and Y. 18mm OD should be fine as long as it is actual 18mm. I have designed my parts for 18.8mm OD, what woby piper3d - General New Machines Topics
If you will provide me with most common sizes of OD(outer diameter) for conduit pipes in other parts of the world I may create versions of the printer fitting those pipes. US 1/2 inch conduit pipe has 17.8 mm OD.by piper3d - General New Machines Topics
Piper 1 3D Printer: highly scalable, based on US 1/2 inch conduits for the frame and for the linear motion "rails". By default, bed size is 8x12inches (200mmx300mm), may be expanded to a larger size or shrinked to smaller. Frame is light and sturdy (thanks to Z brackets) Files: Thingiverse Assembly instructions: http://piper3dprinters.com/by piper3d - General New Machines Topics