Search found 272 matches

by Hans
Thu Sep 17, 2015 8:02 pm
Forum: Shapeoko 3 Assembly
Topic: Building S3 #508, I have a few questions
Replies: 4
Views: 489

Re: Building S3 #508, I have a few questions

Welcome Todd, to find people in your area it can help to put your location in your profile so it shows up on the right side of your posts. I can't comment on #1 and #2, but "scrunched" prints are a common early issue. The dip switches for microstepping on the driver board ship set to 1/8, but grbl i...
by Hans
Thu Sep 17, 2015 6:37 pm
Forum: Discussion
Topic: Holes are too small. Fusion 360 Bore
Replies: 29
Views: 4245

Re: Holes are too small. Fusion 360 Bore

Right. The +Z force comes from the constant downward movement of the helical bore toolpath. That's what I was trying to say in my last post. The plunging and all the sharp corners in the circular pocketing toolpath make it a lot slower than the bore path, but it seems there is an accuracy trade-off ...
by Hans
Thu Sep 17, 2015 2:37 pm
Forum: Discussion
Topic: SO3 Gantry Stiffness in Y direction
Replies: 35
Views: 5249

Re: SO3 Gantry Stiffness in Y direction

When making a thicker replacement plate, it's possible to pocket down to original thickness for any components that would not fit with the added size. The effective stiffness of the plate will still be much improved. Wrench clearance for the eccentric nuts may be an issue, but I'm sure there are way...
by Hans
Thu Sep 17, 2015 1:32 pm
Forum: Discussion
Topic: Holes are too small. Fusion 360 Bore
Replies: 29
Views: 4245

Re: Holes are too small. Fusion 360 Bore

There are two big differences from the pocket to the helical bore toolpath. One is the addition of a reaction force in +Z. If the holes are undersized in Y and correct in X, that would confirm that the problem is the spindle flexing by twisting the X rail because of this +Z force. The other differen...
by Hans
Wed Sep 16, 2015 7:47 pm
Forum: Discussion
Topic: Carbide 3D's Blog:Say goodbye to MDF. We love this new table
Replies: 47
Views: 13225

Re: Carbide 3D's Blog:Say goodbye to MDF. We love this new t

CNC cut to size ground-flat 1/2" MIC-6 tooling plate is $200 from Discount Steel if you're willing to drill your own holes. Just another data point. Is this plate replacing the metal strapping under the stock machine as well, and getting that extra 3/8" of Z space? If so, the holes should be put in ...
by Hans
Tue Sep 15, 2015 6:05 pm
Forum: Design Ideas
Topic: Shapeoko 3 modifications and improvements
Replies: 4
Views: 1712

Re: Shapeoko 3 modifications and improvements

You can't do a belt reduction without the motor sticking out to one side or the other, so even though it bolts to the standard NEMA23 bolt pattern you need to make sure it clears everything around the motor. For example: the X and Z motors are right next to each other on the S3. Do you make one stic...
by Hans
Tue Sep 15, 2015 4:55 pm
Forum: Design Ideas
Topic: Shapeoko 3 modifications and improvements
Replies: 4
Views: 1712

Re: Shapeoko 3 modifications and improvements

I should finish modeling my ratio reducer. Hard to set a final configuration without drawings or solid models of the machine (or owning one). The main challenge is creating a single adapter that fits all four motor locations. Cost to make them yourself is looking like ~70 apiece if I can't find chea...
by Hans
Mon Sep 14, 2015 7:05 pm
Forum: Discussion
Topic: Holes are too small. Fusion 360 Bore
Replies: 29
Views: 4245

Re: Holes are too small. Fusion 360 Bore

In that case yes, it's probably just the machine flexing differently like McOtis said depending on the machining strategy. I'd be really surprised if they didn't come out the same if the finish pass is the same thickness and full depth in both cases. If you can characterize how undersized the holes ...
by Hans
Mon Sep 14, 2015 6:18 pm
Forum: Discussion
Topic: Holes are too small. Fusion 360 Bore
Replies: 29
Views: 4245

Re: Holes are too small. Fusion 360 Bore

What makes you say the holes are too small, measured or something doesn't fit? If you are measuring the ID with your calipers, you should expect an inaccurate, undersized measurement especially in smaller hole sizes.
by Hans
Mon Sep 14, 2015 1:16 pm
Forum: Member Projects
Topic: SO3 - First wood inlay success - end mill method
Replies: 15
Views: 3142

Re: SO3 - First wood inlay success - end mill method

I don't do a whole lot with my machine and certainly not for money. I expect the majority of the programs used here that cost about as much as a Shapeoko were never paid for. Anyone who has thousands to shell out for fancy software is getting a fancier machine... Thank goodness for Fusion, allowing ...