• All scrap pieces cut into smaller pieces that fit the container (the smaller the pieces the better)
• Machined pieces are cleared away from Shopbot area
• Sacrificial layer cleared and vacuumed
• Floor vacuumed below and around Shopbot
• Floor in front of the Shopbot room
• Moved tools, bits & drills back to their original location
• All stuff removed at the workstation (remember to take personal chargers)
• Files saved
• Calculate machining time at end of project using LogCalc

Currently the dirt skirt sometimes tends to come loose in the middle of the milling job. Which is quite problematic since we have the safety system in place and therefore cannot open the door or window to the room.

Especially on Bot1 this appears to be a reoccurring problem. I thinking replacing the bolts in the dust skirt on the left side of the spindle may already help a lot (this is how it has been solved currently on Bot2).

The computer at the workstation of BOT 2 had issues today with importing a dxf into vcarve. We double checked the dxf was exported well, and it was correct (possible to open on other computers). It seems like something is wrong with Dropbox. Moving the dxf from dropbox to the desktop and then trying to import it into Vcarve did work. Not sure why that would be the case.

Erling, Graham & HC have been doing a lot of research on this so far to create a new, bigger and better exposure unit with a drying chamber below. For simplifying things we'll split up these 2 functions and focus first on the exposure unit to avoid postponing/delaying as much as possible.

No sure if necessary but just wanted to put it out here to consider in the future. Perhaps we can make a step by step instruction guide on on how to run a file with the machine. Could potentially be useful to have as a checklist when having a new user and being busy with pre-production meeting for example.

In some cases when the spindle is too high up on the z-axis, it tries to move further up and therefore pushing down the dust skirt and doesn't manage to calibrate the z-axis.

The script should be checked for ways to prevent this from happening

Getting them from Usa is too expensive in terms of shipping. They transferred me to a company in Sweden selling them but they only sell the full wheel covers and not the separate felt pads: 305 NOK per wheel resulting in nearly 5000 NOK for 16 wheels. Might just buy some felt instead and cut it to correct size.

Not sure if this is necessary, there are loads of tutorials out there but we also have a few steps of "usually" doing things at Fellesverkstedet: Our tool library, postprocessor, exporting to dropbox,

If we don't make a step to step guide we could perhaps at least link to tutorials which do the job

One nut has also gone missing

From the meeting we had with Jens regarding maintenance on the machine we've had some talks about a new dust skirt

Some conclusions on the current design:

• The screw that hold the whole dust skirt up is worn/shit
• When the Z axis runs too high as described in #11, the dust skirt gets pushed down
• The front of the dust skirt has been falling of a few times in the middle of a milling job, which is problematic with the current safety system we have. I've recently been sticking to not putting it on to avoid this problem.
• The back of the dust skirt sometimes hangs a bit lower and the bolts on the bottom can scratch material or hangs behind material causing the machines to stop

• The snap on/off is really nice for getting proper suction power
• The leather has been holding up very well
• Possibility of keeping the front part off is nice for being able to see what's happening

Jens suggested having the tube running at the front/left side of the spindle. This will increase the range of our Z-axis as well as the dust skirt would not be in the way. A nice idea from Jens would be if the "front part" is somehow connected to the rest in such a way that in case it would pop off it wouldn't fall on top of the material - like by using a spring that pulls it sideways/upwards

Routines are being written down here:
https://github.com/fellesverkstedet/workshop-wiki/wiki/CNC-Maintenance#routines

I think the weekly routine of planing the sacrificial layer is something we can and have been doing in between this year and so far this hasn't caused major issues so I think we can stick to that for now.

For monthly, semi-yearly and yearly maintenance we probably need to decide on a day.

Ideas:

• Monthly: the last friday of the month?
• Semi-yearly: during the maintenance days we usually have before or after summer and winter holidays
• Yearly: At the end of the year?

Perhaps one on the shopbot spindle and one on the tool station

HC has been making a few different designs which I got to try out over the last days. I think the one with a reinforced disk (thicker layer) where the screw head sits works best so far

Earlier version that have been tried and tested:

• Using regular metal spacers. Does the job well but screws up the bit if not positioned well
• Using laser cut flyfiner spacers. Does the job, doesn't screw up the bit but doesn't last very long.

One that can measure up to 60 mm

We have a splitter for the tubes that run from the extra extraction in the shopbot room. Graham and I have been discussing of using the splitter so you could use the extraction as a vacuum cleaner as well for the shopbots, instead of finding and moving vacuum cleaners somewhere in the workshop.

Sometimes going on top of the material is unavoidable. So to make that easier it would be great if we could have (foldable) step in the shopbot room

see issue #18, probably good to first focus on the exposure unit before the drying chamber.

Current design is an amazing upgrade to the standard manual way of shopbot. In the next version (or adjustments to the current version) we could try to solve some problems with the current design:

• It's hard to put the plate parallel with the surface of the bed in X-axis. Currently we eyeball/fingertip it.
• In the Y-axis we're currently relying on the side of the bed being straight, which it isn't. This can be solved by using the machine and cutting a flat edge on the side where the zero plate is positioned.
• If somebody crashes with their material or with the vacuum cleaner onto the zero plate it could loose it's position
• Screwing the plate into the side is not a sustainable way of fixing. Over time the screw holes will wear out.
• The position needs to be lower than the bed to avoid accidentally cutting into the plate. This means your milling bit needs to stick out long enough to be able to reach the plate, otherwise the collet and dust skirt will crash into your material

Could avoid the problem of potentially crashing into material when Z-probing, in combination with the new dust skirt as discussed in #12

Potential risk is that it's easier to bump into the aluminium probing plate and therefore accidentally changing the position. The zero plate would need to be fixed properly

Could avoid the problem of potentially crashing into material when Z-probing, in combination with the new dust skirt as discussed in #12

Potential risk is that it's easier to bump into the aluminium probing plate and therefore accidentally changing the position. The zero plate would need to be fixed properly