Pegasus 12" Build Notes

[uncle_bob]

Hello,

I am slowly progressing through my build. I am attaching the y extrusion to the frame and they never seem to get tight. It says to make sure that they are level with the bottom of the bracket, but when I try to tighten, they rotate and move all around and never seem to get tight. Any thoughts?

Hi

If you are using the correct hardware, your extrusions are not tapped deep enough. You can either have Colin swap them out or get a tap and clean up the parts you have. If you have tapped parts before this one is no different. If you have never done it, spend some time with YouTube. There is a bit of a technique to doing it without breaking the tap.

Bob

[uncle_bob]

Hi

Ok, here's a picture

(image *should* have been here but it isn't ....)

223_ - 1.jpg

It's a shot of the foot I decided to use. I fiddled around a lot and ultimately decided on a pretty simple design.

Let's see if the image goes through or not. The "post image" button didn't seem to do much.... Drag and drop also did not work. Try again with a *really* small file ... finally it works.

Next up is the "custom" bed mount piece

224_ - 1.jpg

That is a bit higher resolution than the first one so this is a bit encouraging. The mount piece lets the heater "float' when there is no glass. Put another way, the clamp holds both the glass and the heater in place. That way as the PCB changes size during warmup, things don't move all over the place.

Bob

[printbus]

Try again with a *really* small file ... finally it works.

The board currently defaults to inserting images as thumbnails, which people can click on to enlarge. I realized the other day that in the post edit window, you can over-ride this by double clicking on the image and selecting full-size in the properties window that pops up. Edit your post again and give that a shot.

EDIT: And yeah, the board won't accept the high-res pictures people can get from the phone cameras these days. I usually resize photos down to about 800x600 pixels before uploading.

[uncle_bob]

The board currently defaults to inserting images as thumbnails, which people can click on to enlarge. I realized the other day that in the post edit window, you can over-ride this by double clicking on the image and selecting full-size in the properties window that pops up. Edit your post again and give that a shot.

EDIT: And yeah, the board won't accept the high-res pictures people can get from the phone cameras these days. I usually resize photos down to about 800x600 pixels before uploading.

Hi

For those who haven't quite yet guessed, printbus was coaching me through the photo process ... THANKS !!!!

Bob

[BLKKROW]

Hi

If you are using the correct hardware, your extrusions are not tapped deep enough. You can either have Colin swap them out or get a tap and clean up the parts you have. If you have tapped parts before this one is no different. If you have never done it, spend some time with YouTube. There is a bit of a technique to doing it without breaking the tap.

Bob

I think the nuts are tapped, but I think the screws are bottoming out in the extrusion.

[printbus]

I think the nuts are tapped, but I think the screws are bottoming out in the extrusion.

Ah. You guys are talking about the M5 bolts and the nut plates? I know I had a problem on my i3v with the M5 bolts bottoming out, evidenced by a ring from the bolt being cut into the far side of the channel in the extrusion. I solved that by filing off the machining ridge left on the threaded end of the bolts or by adding a washer under the bolt head.

[microjedi]

Ah. You guys are talking about the M5 bolts and the nut plates? I know I had a problem on my i3v with the M5 bolts bottoming out, evidenced by a ring from the bolt being cut into the far side of the channel in the extrusion. I solved that by filing off the machining ridge left on the threaded end of the bolts or by adding a washer under the bolt head.

Actually its the bolts that screw into the end of the 20x20 extrusions.

I think I may try to find slightly shorter M5 bolts. I don't have the tools to do any tapping. If I can't find the bolts, I'll reach out to Colin.

[uncle_bob]

Actually its the bolts that screw into the end of the 20x20 extrusions.

I think I may try to find slightly shorter M5 bolts. I don't have the tools to do any tapping. If I can't find the bolts, I'll reach out to Colin.

Hi

If we are talking about this:

227_ - 1.jpg


.... and not this (the tiny thing in the middle of the picture):

227_ - 2.jpg


There are two bolts on the first part. Both can be problems. The horizontal one can have an issue with the tapping of the extrusion. The solution for that is a tap or a new part (if it is stripped out). The vertical bolt goes into an insert. The insert can strip out and may need to be replaced. The bolt may be to long and you need to grab the right one. If the insert is stripped out, a snap in insert is an easy thing to replace it with.

If we are talking about the second mounting structure for the Y axis (second picture), there are a whole bunch of things related to that mount.

Bob