So I a while after the initial cut was made a minute passed by without any sign of a fire. However the flame was being sucked by the vacuum and was not visible through the hole that started it. The flame was under control and now out. Used the fire extinguisher to make sure the flame was out. This is the first time I’ve ever had a bad bit feed rate start a burn. Lesson learned and if There’s anything I can do to fix it, let me know.
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Was the bed damaged?
Too slow? Using an end-mill as a drill?
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Yup. That’ll do it.
We really should have a fire extinguisher next to the computer station. (Or is there one?)
This is at least the second time this has happened so hole diameter versus end-mill diameter should be included in the training.
In case he’s interested: @themitch22.
@Team_Woodshop will have to decide what’s next.
@Andy_Bojo, thank you for the post and ensuring the fire was out!
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Has anyone checked the internal filter on the vac to make sure it hasn’t melted or something?
Yeah the last time this happened it was from using a downcut bit to drill.
The vacuum both makes the fire worse and less obvious. That bed damage isn’t terrible but is a lesson to all of us in why the Multicam can’t be left alone while running.
On a related note, what is going on with our spoilboards? People are cutting into them pretty deep from the looks of it. In years of using the Multicam I’ve never had the bit more than barely kiss the spoilboard - I usually end up with onion skin on most thru cuts.
It’s probably ok but if anyone wants to check, it’s the large canister on the floor to the right of the head of the Multicam.
Last fire we had involved a lot more of the bed and the canister filter was sooty but fine.
We need to get more sheets of MDF and cut them to 2x3’ pieces and resurface them. Spoilboards are meant to be spoiled, the more moisture and use the more they warp and get degraded. The phenolic that burned doesn’t look that bad. I would recommend planing it flat so the spoilboard isn’t raised where it burned.
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I was under the impression we had moved away from MDF to something more expensive and that (plus the volunteer time of the replacement obviously) was the reason for the increased suggestion of not messing up the spillboard.
It might be LDF but that can warp more. We have enough thickness to putty and mill down. It just needs to be done more often than we have. I havent had much time to do the maintenance as usual.
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