do a major service on Gerald

[DefProc]

Gerald has been collecting enough fixes, and has enough worn parts that it's worth taking it out of service for a week or more to perform a major service and get our large cutter running more reliably again.

We'll need to collate a list so there's a clear idea of all the things than need doing as part of a service, where appropriate, these should link back to an issue (open or closed):

• replace the lower bed toothed belt(s) Gerald's bed is visibly off-kilter #288
• replace the screw, refit and loctite the bearing cover on the y-axis slides Gerald has misplaced a screw #287 Gerald is jumping along the y axis #429 (requires disassembly of the y-axis linear bearing assembly)
• loctite the bearing plate mounting screws on reassembly Gerald producing slightliy distorted output #517
• fit the safety cut-out switch more securely Gerald not cutting due to safety switch having slipped #516
• new mirrors and lens for gerald?
• clean down the whole inside of cutting residue,
• fit a 15mm drive belt to the x-axis Gerald needs a 15mm belt fitting #501
• build a permanently vented exhaust setup Gerald needs a new exhaust #474
• replace the short motor initial drive belts
• refit the front panel lock
• replace the control panel for one that's not peeling off
• fit new o-rings behind the intermediate mirrors Get new 20mm o-rings to go behind the intermediate mirrors #387
• Any more?

It's already looks like a big job, and some of these require more than one person. It would be great to get a working group together from the wider community. Can you help with this service?

[amcewen]

Organisers' meeting notes: @Jackie1050 and @huffeec have offered to help. John Cain possibly too.

All to suggest any further things that need doing.

[JimSparrow]

I'm conscious that Patrick, you're off for most of August, and we want to give people plenty of notice for a refurb is the laser is going to be down.

Should we try and set a date for this even if it's in September, so when people are frustrated they know there is a service coming?

Thanks, Steve

Sent from my Asus P027 using FastHub

[amcewen]

From the organisers meeting, @DefProc what's the status on this?

[DefProc]

Happy to take a week from September, how about the 25th?

Need to order a lower toothed belt from China #288 (which hasn't happened yet) as HPC was unable to supply the belt. I think all the other parts can come from the UK (eg ducting, mirrors, lenses and o-rings) or we already have in the laser cutter cupboard (the screw that came out, upper belts)

[DoESsean]

Is that the belt that we were waiting ages on? Happy to order a new anything if someone lets me know what it is we need. There are a few suggestions on the issue page @DefProc has linked, and I know I'd end up picking the wrong one...

…

On Fri, Aug 25, 2017 at 10:00 PM, Patrick Fenner ***@***.***> wrote: Happy to take a week from September, how about the 25th? Need to order a lower toothed belt from China #288 <#288> (which hasn't happened yet) as HPC was unable to supply the belt. I think all the other parts can come from the UK (eg ducting, mirrors, lenses and o-rings) or we already have in the laser cutter cupboard (the screw that came out, upper belts) — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#518 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AIp8MKUS8nxwFXfaUjq4lzZzge5QvMh6ks5sbzXggaJpZM4N_Y3k> .

[DoESsean]

No-one has said anything about the belt. As I understand, this is still an issue.

[goatchurchprime]

According to Karl D. the right hand side of the bed is visibly lower and needs 2cm of packing under the stock to level it.

[JackiePease]

There's a screw thread at the back right that let's you adjust the bed height - lasts a while On 14 Mar 2018 17:52, Julian Todd <[email protected]> wrote: According to Karl D. the right hand side of the bed is visibly lower and needs 2cm of packing under the stock to level it. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub<#518 (comment)>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AMNY0CgxkiI3uAWF0qfy_Lo46XFoY16Tks5teVjXgaJpZM4N_Y3k>.

[JackiePease]

Not sure which issue to add this to ...
@zarino and I were trying to cut some ply yesterday (parts of the crate Martin's CNC came in ).
This was approx. 5mm thickness. Settings : speed 5 power 70 corner power 65. It cut ok in top left corner but even after 4 cuts it didn't cut through in other places (more than 300mm from top left).

[Sean-anotherone]

I have proposed elsewhere that gerald needs a proper overhaul, the list at the start of this thread seems fairly comprehensive - although a couple of those things have already been done.

The belts should not be a problem at all - https://www.beltingonline.com/ have always had every belt/pulley I have required ex-stock, and they are in Hampshire - more than new belt is required though - there are mechanical issues under the bed, too, and even properly diagnosing them will require a stripdown.

Mike and I have an action to get motivated and relocate Morris into the laser room so he can be worked on and brought into service - once that is complete I suggest taking Gerald offline for as long as it takes to fix everything.

[magman2112]

Closing this issue as a major service on Gerald has been completed in #1642. Any additional problems will be addressed in the new issue.