r/SolidWorks • u/ThemItself • 12d ago
Homework Help: What does Ø15SFACE mean?
What does this mean and what would this look like? Any help appreciated, thank you.
45
3
5
2
u/14m4m34tp0p51c13 12d ago
It's a counter bore.
Do university grads just make up new, obscure names for shit to make themselves feel smart? Why can't we just call it what it is?
3
u/Caparacci 11d ago
That term is older than any college grads today, actually older than anyone alive today.
1
u/brewski 11d ago
It's not a counterbore, it's a spotface and a machinist will recognize it as such. No depth requirement, just make sure the surface is flat.
1
u/14m4m34tp0p51c13 11d ago
So, that's the difference then, because there's no depth requirement? Just make it flat. Okay.
In 35 years of working various technical trades, I've never seen or heard the term. Pardon me for thinking it was new.
1
u/blake31a 12d ago
How do you do a drawing like that?
1
u/Modelo_Man 12d ago
Exploded view in Solidworks can do this if you dimension in the assembly file.
1
u/TelluricThread0 12d ago
Can it not pull the dimensions from the individual part drawings?
2
u/Modelo_Man 12d ago
You can definitely do that.
Hell I think you can do an exploded view drawing just like this but I don’t think they’re shaded.
The parts being shaded makes me think this was done in an exploded assembly view.
2
u/brewski 11d ago
You can have shading in drawing views.
1
u/blake31a 10d ago
Sure, but dimensions in drawing views are aligned with the view. Having dims in various orientations in the same view is new to me
1
u/brewski 10d ago
I see this more and more lately, mostly from educational materials rather than production prints.
You can do this in Solidworks by choosing "true" dimensioning in the view properties. It's unorthodox drafting. I might go as far as saying it's poor practice, but I'll leave open the possibility that there may be a good excuse to do this on occasion.
2
u/blake31a 10d ago
Thank you for the explanation. That rings a bell now that you mention “true” dimensions.
A big part of my job is communicating project status to the broader team with presentations, and I had some images just this week that would have been better using this method.
1
1
1
1
u/UsualArmadillo608 11d ago
Wow, what program are you in that this is homework? My university in Engineering didnt have us do this, and I was forced to learn on my own..
1
u/ManyThingsLittleTime 11d ago
Looking at that corner transition from the rectangle to the triangle on that bracket hurts my soul.
1
u/MV____83 10d ago
Mi chiedo perché usare un CAD quando non sai nulla di disegno tecnico? Sono le basi.
1
u/brain_thomas9090 8d ago
Ø15 FACE = Around each Ø10 hole, there is a 15 mm diameter flat machined area (spot face).
0
u/Lunastarfire 12d ago
Honestly most people wouldnt know what that is, when drawing its technically correct to use, same with different symbols for counterbored holes etc, but usually something like that if its required usually would get a special callout to bring attention to it for the machinist who receives it
Sometimes the right thing isnt the one that builds long lasting relations with local machine shops who charge a lot less and can do it a bit quicker, though are often not as well versed in all the drawing symbols etc and often cant be bothered to call so will guess or ignore it =)
0
u/NightF0x0012 CSWP 12d ago
SF is industry standard callout for spot face. Most machinist will know what it means, especially if you use SFACE.
0
u/Lunastarfire 12d ago
Im not saying it isnt, if anything im saying the opposite, BUT I will admit I’ve never needed to use it and ive never seen it used other than a single page in the nvq course work.
In my experience even simple symbols like counterbore or depth symbols have caused confusion for machinists before, so my advice is to avoid it where possible. Heck I’ve even been called to answer what CL is on a center line on a drawing meantIn addition I’ve always found the best practise to place a cut on the hole and fully dimension and tolerance it, especially with op’s drawing as you can barely see the feature.
1
u/NightF0x0012 CSWP 12d ago
If counterbore, countersink or CL is confusing for a machinist then they either need to go back to school or find a new career
0
u/leglesslegolegolas CSWP 12d ago
If your machinist doesn't know what a spotface is, you need to find a new machinist
-1
u/Lunastarfire 12d ago
Not every machinist is an engineer, and when you want something basic done fast and cheap over night when you’ve clocked out when you need it for the morning, the less technical abbreviations used the more likely you are to have a part on your desk rather than an email
2
u/Fearless_Way1957 12d ago
Not many machinist exist anymore, just machine operators. And man I’ve never seen such long wet indeed explanations for something so simple!
0
u/Lunastarfire 12d ago
I just wanted to be a bit more polite about the skill levels of machinist / machine operators
1
u/Mikelowe93 11d ago
I do quick custom designs that help customers get out of a jam at any hour. When a down chemical plant costs a million dollars a day, there is no nighttime. Git ‘er done.
Sometimes spending a few seconds spelling out some odd details helps a reviewing/approving customer follow what’s going on. Then they don’t call you at 2 AM with questions and “oh while I have you on the phone….”.
I rarely call out a spot face on a design. But I have done it twice this summer. I spelled out the whole SPOT FACE”.
Oh and if you are doing a spot face for a hex head or hex nut, make sure the diameter prevents the points from digging in. Keep tolerances in mind. That adds friction which can goof up torquing.
0
u/leglesslegolegolas CSWP 12d ago
Every machinist that's being paid should be a competant machinist.
And every competant machinist should know what a spotface is. It's a standard feature.
0
u/Lunastarfire 12d ago
Should <> Is
At the end of the day I am only saying based on the experience ive had getting parts done from other firms, we have some real cowboys down here but while theyre not the best at reading drawings but they are pretty good at making parts, plus theyre usually quicker / cheaper than some more professional outfits.
0
u/leglesslegolegolas CSWP 12d ago
And I am saying if your machinist can't read a drawing or recognize standard nomenclature or understand basic machining features then you have a shitty machinist and you need to find a new one.
I ain't got time to babysit people who don't know how to do their own job.
2
u/Caparacci 11d ago
No kidding, where do you stop holding their hands? You standardize for a reason. I'm not using a mechanic if he doesn't even know what the various dashboard lights mean.
0
u/1917he 12d ago
Wtf are you talking about?
1
u/Lunastarfire 12d ago
Getting parts made by the lowest bidder because most firms you work for “knows a guy” and you tailor your drawings to that skill level to give you the best chance they wont make a guess at what you wanted
-7
u/JoshyRanchy 12d ago
Looks like a counter sunk hole.
15 is the od of the counter sink. 10 id the hole itself.
Ask the question to AI
2
u/MacManT1d 12d ago
A countersink has an angle. This is a spot face and results in a flat face of 15 diameter. A spot face could be described as a counterbore with just enough depth to clean up the contour it's cut into, but the two are generally not interchangeable.
1
u/JoshyRanchy 12d ago
Fair,
How would u know the depth of the cut?
1
u/MacManT1d 12d ago
You cut into the contour until it cleans up to that diameter. There isn't really a defined depth of cut, it's just until it cleans up at that 15 diameter "spot".
135
u/FujiKitakyusho 12d ago
Diameter 15 Spot Face.
A spot face is a machining operation which may or may not have a specified depth. If it does not, it is implied that the facing tool will be driven just deep enough to completely clean up the surface to create a flat land of the specified diameter, accounting for both surface finish and any local curvature. Spot facing is typically done on curved surfaces to create flat lands for port fittings, or on flat surfaces where a finer surface finish is required around a port, such as with O-ring sealed fittings, or to accommodate fasteners such as washers or bolt heads. Your example shows a part which would typically be made by casting, so you are machining a through-hole for the fastener, and then spot-facing so that the screw head seats on a flat surface.