Thread: Some CNC router projects.

G'day all,

had been asked by my old man who loves his fishing to make a crab measure that has a side piece to place onto the carapice of the crab and then you dont have to struggle with tring to keep the thin end on the carapice. This makes it easier to measure the crab.

" GOT IM " is my dad's catch cry whenever he's got one

Hi Gary
A crab go, crab no go gauge
Nice work

Must be the day for cutting jobs. I've done a bit of a catch up before the weather got too hot for the shed as well. One of them was this brass compass. Nothing special and much like a sundail design without the pointer.
Sorry about the quality of the photo. I have had this trouble before - how do you take a photo of a shiny object?

Didn't like the donut shape so decided to add a centre. It is like a medallion and pocketed to 1mm depth. It is thicker by 2mm than the original plate and the arrow can be rotated to a direction of interest.

Hey Rod,

Very nice work. What feeds and speeds are you using for brass, I have tried some from bunnings and had to go micro shallow on the pass and quite slow. Was probably the wrong type of brass too.

Also is the centre piece different brass or just a photo trick ?

Chers

Gary

Hi Gary
I can't do good photos so a photo trick is beyond me.
Yeah they were from two different pieces so a slight variation in colour. The middle is twice the thickness of the out side donut.
Cut at 0.1mm per pass, feed 400 and plunge 50 but I cranked that up to around 600mm/min once it was running. Spindle speed around 3000 RPM - did it on the X3 mill and ran full flood coolant - mainly to wash the chips away.
Yeah brass like ally can be a bit fickle. I think the stuff from Bunnings is for trim and not intended to be machined. The brass I used was already polished and didn't have those drawn marks in the surface.

Here is my latest project for the list

Wow that is pretty.

Is it for the front door?

How thick is it?

Greg

Mike,

How did you do the paint fill ... after polishing or before?

Alan

Hey Greg, Zoot,

I ended up putting it on one of the front gate pillars. I'll take a shot and add it to the post.
The Brass is 2mm

I buffed the metal of any imperfection with a hard wheel and then a floppy wheel, using the compound made for each wheel. I added the black paint, which is car acrylic, the trick here is to make/thin the paint so it's like water. Fill it to the top and let it evaporate - don't expose the unt to sunlight to cure the paint (one of my mistakes).

I then hit is with #2 kitten cut & polish and then with Macquires polish.

An Essendon plaque for a friends mate all reverse carved perspex and painted then recessed into the veneered MDF

He might have chucked it out after last nights effort though

Nice work Gary but Essendon???
Could be worse could have been the Dockers

Rod

He He
I knew that one would get a rise.

Spose I'm minced meat again this year and we haven't even played a game
Oh well at least your mob have the galloping lamp shade
he is a freak for sure