Limestone Seahorse

This is the place to post images of work produced using Aspire

Re: Limestone Seahorse

Postby Rcnewcomb » Wed Sep 19, 2018 4:20 pm

although I am a bit hesitant to mess up my machine with the dust

Hold a shopvac nozzle near the bit while it is cutting.
- Randall Newcomb
10 fingers in, 10 fingers out - another good day in the shop
User avatar
Rcnewcomb
Vectric Wizard
 
Posts: 3069
Joined: Fri Nov 04, 2005 5:54 am
Location: San Jose, California, USA
Model of CNC Machine: GCnC/WinCNC

Re: Limestone Seahorse

Postby scottp55 » Wed Sep 19, 2018 7:04 pm

G.,
I cut a fair amount of stone/gem with sintered diamond bits on a Foredom, BUT ALWAYS wet!
NONE of my Diamond tools like dry!!! Fractures the diamond and rapidly deforms the matrix of the sintered shape.
On my Diamond Pacific "Pixie". NOTHING ruins a 4" wheel faster than not enough water!
Stay Carbide.
2 cents.
scott
User avatar
scottp55
Vectric Wizard
 
Posts: 2292
Joined: Thu May 09, 2013 11:30 am
Location: Kennebunkport, Maine, US
Model of CNC Machine: Shopbot Desktop 5.5"Z/spindle/VCP9

Re: Limestone Seahorse

Postby Tailmaker » Thu Sep 20, 2018 4:38 pm

Thanks Scott, maybe I should not ruin the diamond bits with dry stone then....the stone experiment would anyway just be an escapist distraction from my official first priority to reorganize my shop.
Tailmaker
Vectric Apprentice
 
Posts: 143
Joined: Sun Jun 16, 2013 4:40 am
Location: Pasadena, CA
Model of CNC Machine: Home Built 4-axis Router

Re: Limestone Seahorse

Postby scottp55 » Thu Sep 20, 2018 6:21 pm

May have spoken too quickly Tailmaker :oops:
JUST masked/goggled up, and took my least used full sintered shape which was a solid sintered diamond truncated cone.
Grabbed a damaged selenite crystal specimen(Mohs 2), and a non-nacreous shard of oyster shell(approx. Mohs 3), and ran Foredom at max 18K and tried to approximate 1 IPM.
Spent about 5 minutes using just the shank side corner, and after rinsing with water, under my 10X loupe, I couldn't see deformation of the corner or break down of the diamond.
Sooo.....may be worth an experiment? (at YOUR cost:)

For me, I LIKE Randall's results with using old carbide bits :)

DO know that I drilled 200 holes in oyster shells for my Mom last Christmas for ornaments,and would up with Drillman1's .0625" downcut carbide in the Foredom at about 16K after trying several different bits, and drilled wet by method of putting a sponge in rubbermaid container and pressing shell down until barely covered to avoid dust.

Zip,Zero,Zed experience with new diamond coated router bits :oops:
Sorry for speaking so fast:(
(experimenting saved me from cleaning garage:)
scott
User avatar
scottp55
Vectric Wizard
 
Posts: 2292
Joined: Thu May 09, 2013 11:30 am
Location: Kennebunkport, Maine, US
Model of CNC Machine: Shopbot Desktop 5.5"Z/spindle/VCP9

Previous

Return to Aspire - Gallery

Who is online

Users browsing this forum: No registered users and 19 guests