Search found 268 matches

by samc99us
Wed Jan 13, 2016 10:05 pm
Forum: Discussion
Topic: Shapeoko Machine capabilities and limitations
Replies: 59
Views: 7520

Re: Shapeoko Machine capabilities and limitations

Now, let’s look at the belt properties. The Gates data sheet lists a 1” GT2 belt to have a modulus of 18,000, and specifies proportional reduction for smaller sizes with a further 10% between ¼” and ½”. That means the 18,000 modulus becomes 4,050. To combat this, one could increase the width of the...
by samc99us
Wed Jan 13, 2016 9:20 pm
Forum: Discussion
Topic: Using a Shapeoko3 to drill aluminum
Replies: 38
Views: 4133

Re: Using a Shapeoko3 to drill aluminum

Hmm, that is a nice unit, but not sure how it mounts? And it is getting darn heavy! I noticed most spindles aren't rated lower than 6,000 rpm either and you really want to be down around 1,000 rpm for most smaller drill bits. I don't like using an end mill to drill holes as it is designed for cuttin...
by samc99us
Wed Jan 13, 2016 9:18 pm
Forum: Tooling & Fixtures
Topic: Depth Rings / Distance Rings
Replies: 13
Views: 2713

Re: Depth Rings / Distance Rings

Let me know if you find any for the 1/4" size! Think and tinker sell them for the 1/8"...
by samc99us
Sun Jan 10, 2016 3:19 am
Forum: Tooling & Fixtures
Topic: Angled mount for spindle
Replies: 5
Views: 2935

Re: Angled mount for spindle

I need a 6 degree cut for these wings: http://www.rcgroups.com/forums/showpost.php?p=33558402&postcount=459 .Molds are joined at 6 degrees. I wish I knew about these bits earlier! MSC has a pile of them: https://m.mscdirect.com/mobileweb/product_detail?id=03280849&hasRestrictedParts=false Cheaper th...
by samc99us
Sat Jan 09, 2016 10:55 pm
Forum: Tooling & Fixtures
Topic: Angled mount for spindle
Replies: 5
Views: 2935

Re: Angled mount for spindle

Oh that's a sweet idea!!! I was thinking of adding a second set of holes to my mount to accommodate 6 deg cuts. Much easier than mounting the workpiece at the right angle and eliminates height issues.
by samc99us
Fri Jan 08, 2016 11:37 pm
Forum: Tooling & Fixtures
Topic: Drilling with Shapeoko
Replies: 21
Views: 9182

Re: Drilling with Shapeoko

Oh, thanks for all your work on the wiki. It plus these forums are an invaluable resource.
by samc99us
Fri Jan 08, 2016 11:35 pm
Forum: Tooling & Fixtures
Topic: Drilling with Shapeoko
Replies: 21
Views: 9182

Re: Drilling with Shapeoko

Yep Will, but it is more complicated than that due to how the workpiece is held. Bits need to be swapped at the same location. Installing balanced collet rings with equal depth settings will be faster and allow for more precise check touch offs.
by samc99us
Fri Jan 08, 2016 8:08 pm
Forum: Tooling & Fixtures
Topic: Drilling with Shapeoko
Replies: 21
Views: 9182

Re: Drilling with Shapeoko

Only 4 sizes available, so not very useful. It would be nice if the precise bits drill bits had sharper points, as is they are pretty shallow. The rings are really only useful if I can put one on both the 1/8" and 1/4" bits. I swap bits between roughing and finishing, and could remove more material ...
by samc99us
Thu Jan 07, 2016 7:27 pm
Forum: Design Ideas
Topic: Shapeoko Inspired New Machine Design
Replies: 2
Views: 2409

Re: Shapeoko Inspired New Machine Design

Well, I have a full design worked up with steel v-rail as well. The only reason I have for moving away from delrin wheels at this point is contamination when milling aluminum, which I simply don't do often enough. I added more wheels for more stiffness, and frankly I think this design is stiffer tha...
by samc99us
Thu Jan 07, 2016 7:12 pm
Forum: Tooling & Fixtures
Topic: Drilling with Shapeoko
Replies: 21
Views: 9182

Re: Drilling with Shapeoko

Thanks John for your feedback! Any thoughts on making your bits available in standard size "kits"? I.e, most of the common drill sizes needed for clearance and tapped holes up to say 1/4"? I would gladly pay for such a kit... Also, any chance you sell those depth rings separately? They would be real...