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28-01-2018 #11
Superb stuff Wal - that's line I'm heading towards for my guitar logo's etc. I'll be picking your brains on this topic I'm sure as my design/build gets off the ground.
Francis
https://milsomguitars.weebly.com/
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28-01-2018 #12
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05-11-2018 #13
Hi Wal
Where do you get your pearl cutters from ? and what kind of speed feed rates are you using. I liked your dream or die video. Was that an arbortech turboplane that your'e using.
Cheers
AndrewLast edited by the great waldo; 05-11-2018 at 09:29 PM.
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05-11-2018 #14
Well Wal, I've been playing around with the WorkBee for a while now here's one of the latest headstock inlays I've done...
The MOP inlay was cut with 0.5 and 0.3mm end mills, the wood inlays 1.3mm end mill. Feeds @ 20k rpm for the inlay circa 1.5 mm/sec with 0.3mm depth of cut. The wood inlay pockets were cut circa 5mm / sec 1.2mm depth. I remembered you saying about super gluing your MOP to an ali sheet and soak in boiling water to release the parts. I ended up super gluing to thin MDF and soaking in boiling water. The MDF just swells up and flakes away.Last edited by fwm891; 05-11-2018 at 09:51 PM.
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06-11-2018 #15
Andrew,
Thanks for your kind words, I'll be posting about that Dream or Die piece in the next few minutes as there are a couple of questions I have regarding grain filler... Anyway, I buy my cutters from APT in Glasgow. I use ordinary two-flute carbide cutters - the same as I use for aluminium/brass/wood. Heh - they seem to work for everything! A couple of links:
https://www.shop-apt.co.uk/end-mills...d-carbide.html
https://www.shop-apt.co.uk/micro-dia...ide-60hrc.html
Feeds and speeds are very conservative when using the smaller cutter - less than 0.6mm and I'm running around 1-1.5mm/sec - yep, very slow but luckily inlays tend to be pretty small so it's not too much of an issue. The larger 52mm surfacing tool I use is from Wealden:
https://www.wealdentool.com/acatalog/Surface-Trim.html
Francis - that's an awesome looking headstock - that WorkBee is certainly doing the business for you! Good call on the MDF - I take it that you don't get any issues with fibres sticking to the back of the inlay pieces?
Wal.
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06-11-2018 #16
Thanks Wal - no any fibres that do stick a light rub on fine wet-n-dry removes them - I use APT as well for my cutters - very prompt service.
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06-11-2018 #17
Hi Wal
Thanks for the links, i'll check them out.Your right about the slow speed. I cut my surname out on Sunday (12 Letters Polish name !) 6 passes with a 0.5mm cutter must have taken 45 mins. My cutters are a bit long so I didn't want to push them too much. The cutters on the apt site are a little short on the 0.5mm dia, only 1mm deep my pearl is usually 1.5mm thick. That surfacing cutter looks really useful.
Cheers
Andrew
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06-11-2018 #18
Andrew, they also stock long necks:
https://www.shop-apt.co.uk/2-flute-l...lls-68hrc.html
Wal.
Sent from my HTC One M9 using Tapatalk
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06-11-2018 #19
Hi Wal.
Thanks for that, I'll have to give my plastic friend a bashing.
Cheers.
Andrew
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17-12-2019 #20
I've done a bit of MOP machining as well, also for guitar inlays. Your technique of gluing the blanks to a plate for machining sounds excellent. I made a small fixture from aluminum to hold a 1" x 1.5" MOP blank. as shown in the photo. I cut out a lizard figure, and cut the corresponding pocket to inlay it into. There is a photo of a finished inlay, although this one happens to be cut from African blackwood, not MOP;
My apologies for the imperial measurements -- we colonials are rather backward, you know!
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