Mistake and Recovery

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Mistake and Recovery

Postby adze_cnc » Mon Jan 28, 2019 11:33 pm

A recent post by "scottp55" https://forum.vectric.com/viewtopic.php?f=2&t=31377 brought to mind a project that went woeful wrong but was thankfully less than a 1/16" from disaster.

It was the beginning of the second side of a double-sided job. The hold-down failed and a 3.5" thick oak blank "walked" up the length of a bit projecting 3.5"+ Thankfully I stopped proceedings before the bit could encroach into the "model".

Steven
Attachments
Impaled.jpg
shift embedded.jpg
ImpaledLength.jpg
ImpaledLifeGoesOn.jpg
shift.jpg
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Re: Mistake and Recovery

Postby WNC_Ed » Tue Jan 29, 2019 12:22 am

Whew ... great save!
Looks awesome.
Kind of a pot belly look.
Love it!
Maker of sawdust
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Re: Mistake and Recovery

Postby scottp55 » Tue Jan 29, 2019 2:09 am

WOW! 3.5"!!
Lucky you didn't get a carbide Inlay Steven! :)

Yep, mistakes teach us more than a perfect cut every time.
Like someone I respect says "Sometimes 90% of a job can be the hold down"
BOTH of us could have had nice little fires if we weren't right there.

Did you nudge model a little afterwards, or just take REALLY careful measurements, and say "WHEW!"

Very Pleasant shape to the "Bowl?"...I LIKE it!
What's the Inlaid "Stripe"(?) Steven?
You have a shot of the top?

Thanks for the mention, and the post! :)

scott
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Re: Mistake and Recovery

Postby adze_cnc » Tue Jan 29, 2019 6:04 pm

It was hollowed out to contain some small computing device, RFID transmitter, and lighting. The band was some sort of acrylic. It was capped by another bit of oak.

I can't quite remember what the student's project was but eight years on I expect the computer aspect would take up not much more space than a key fob. Which is a shame as this object was quite tactile and pleasant to view.

Steven
Attachments
close-call.jpg
Near miss. Gouged area encroaches on bit kerf.
top.jpg
Top view of object with its "tail" (10" l x 7" w x 3" h)
inside.jpg
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Re: Mistake and Recovery

Postby scottp55 » Tue Jan 29, 2019 7:23 pm

Thanks Steven:)
Hope it's still out there somewhere and repurposed....WAY better than a Tupperware container as far as looks go! :)

Yep..still amazes me the tech pace. House was designed with a top end Gateway that cost $7K, and now.....
Read a old sci-fi book last week where the end of the world could be avoided if only they could free up one of the few 10GB computers :D :D

Thanks again Steven!
scott

Oh:) In 2015 Shopbot software had a bug that only happened IF you paused the run while Z was retracting(quickly fixed), BUT I was doing a "Lady in the Woods" on some scrap..
I pressed Resume and the .125" shank 30 degree started diving....Finger was on the Spacebar Pause button...so no collet nut marks AND I missed Her foot thank goodness.
Considered in some circles Impolite to drill a hole through a Lady's foot!
Wound up making the left one for the gift instead...kept the right one to remind me to stay close to the machine!
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2 Ladys 2.jpg
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Re: Mistake and Recovery

Postby ezurick » Fri Feb 01, 2019 10:04 am

adze_cnc wrote:A recent post by "scottp55" https://forum.vectric.com/viewtopic.php?f=2&t=31377 brought to mind a project that went woeful wrong but was thankfully less than a 1/16" from disaster.

It was the beginning of the second side of a double-sided job. The hold-down failed and a 3.5" thick oak blank "walked" up the length of a bit projecting 3.5"+ Thankfully I stopped proceedings before the bit could encroach into the "model".

Steven


Good save but wait! You carved that pot belly legs out with an end mill? Is that a 1/4" end mill I see? Or was that just the rough cut?
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Re: Mistake and Recovery

Postby adze_cnc » Mon Feb 04, 2019 9:52 pm

End-mill was for roughing only. Ball-end for finishing (image sort of shows that).

This was done when I was green. Today I'd have multi-stage roughing strategy to avoid having to rely on one cutter only.
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