casterle
casterle
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RRCRat Rig Community [Unofficial]
Created by chicken on 6/28/2024 in #fix-my-printer
VC4 * 500 Gantry warping issues as printer heats
I just tried to sponsor him on GitHub, but they no longer take PayPal for sponsorships. I've emailed them to find out how I can pay for the sponsorship. Given what he has created for us, IMO we should all be chipping in.
108 replies
RRCRat Rig Community [Unofficial]
Created by chicken on 6/28/2024 in #fix-my-printer
VC4 * 500 Gantry warping issues as printer heats
I can tell you what torques I've been using so far (I've just done the y axis rails).
Yes, please and thank you!
108 replies
RRCRat Rig Community [Unofficial]
Created by chicken on 6/28/2024 in #fix-my-printer
VC4 * 500 Gantry warping issues as printer heats
Is torque specified in the build docs?
108 replies
RRCRat Rig Community [Unofficial]
Created by chicken on 6/28/2024 in #fix-my-printer
VC4 * 500 Gantry warping issues as printer heats
Rather than trying to estimate actual current bowing related to some temp sensor (where? How is it wired? How reliably do readings map to actual bow?), maybe compensation could be based on live scanning with the beacon sensor.
It seems to me the temperature of the extrusion, measured in the center, would be enough to calculate the bowing based on the expansion factor of steel vs aluminum. If the Beacon is able to map while a print is in progress that would be a better way to approach the problem as it would work with standard hardware. I didn't expect RR to ship a product that is basically unusable in its stock configuration (which if @chicken's experience is typical, it is).
108 replies
RRCRat Rig Community [Unofficial]
Created by chicken on 6/28/2024 in #fix-my-printer
VC4 * 500 Gantry warping issues as printer heats
I'm sorry if I mislead you with my SMOP comment. It was an inside joke when I was a developer back in the 80's and 90's. I didn't intent to imply that it was in any way easy. I also didn't understand that Mikel was doing this for free; I assumed he was a RR employee.
108 replies
RRCRat Rig Community [Unofficial]
Created by chicken on 6/28/2024 in #fix-my-printer
VC4 * 500 Gantry warping issues as printer heats
Not necessarily the best way for me! This seems to be a common problem exacerbated by the size of the printer. It would be nice if RR found time to code a solution. If not I can always get one of those titanium replacements for the aluminum extrusion, but as I've already spent quite a bit more than I had initially anticipated I'd like to avoid the extra expense.
108 replies
RRCRat Rig Community [Unofficial]
Created by chicken on 6/28/2024 in #fix-my-printer
VC4 * 500 Gantry warping issues as printer heats
I'm still concerned with the length of time needed to heat soak before I can expect a good print. I'll never be in a 'production' environment where I'm printing continuously. My situation, once the system is tuned, will be to print a part, then shut down until I'm ready to print the next part. Waiting an hour or more before I can print is sub-optimal at best. I hope RR looks into a software solution based on gantry temperature. All it should take is a cheap sensor and SMOP (small matter of programming).🙂
108 replies
RRCRat Rig Community [Unofficial]
Created by chicken on 6/28/2024 in #fix-my-printer
VC4 * 500 Gantry warping issues as printer heats
If they knew the temperature of the extrusion, they wouldn't need to know how long it had been heating. Does the toolboard have a temp sensor they could read?
108 replies
RRCRat Rig Community [Unofficial]
Created by chicken on 6/28/2024 in #fix-my-printer
VC4 * 500 Gantry warping issues as printer heats
Great job documenting this. It has me concerned; I hope someone from RR jumps in here. I don't look forward to long heat soaks before I start printing. One solution would be titanium, but that's expensive and has issues of its own. I wonder if there's a way to fix the rail firmly in the center and allow slippage toward each end of the rail? Given that the expansion rates can be predicted, perhaps RR could compensate for this in code?
108 replies