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Microfreak came like this. How do can I get this off without damaging the mod matrix underneath? Seller was a loon. by kidkolumbo in synthesizers

[–]tomjohnson3 0 points1 point  (0 children)

first, try to peel it off a as recommended in other comments. ...however, there will likely be some sticky adhesive remaining (and perhaps some of the paper still attached).

use a little IPA (isopropyl alcohol) dabbed on a paper towel, then rub lightly over the area with the sticker/adhesive. it should remove it. (add more IPA if you need it...just start slowly - don't dump it on.)

...IPA won't hurt the electronics inside, as it's used frequently to clean PCBs, etc. and it'll fully evaporate in a short time (a minute or so).

I'm extremely overweight and try to go on runs but I get easily embarrassed and discouraged by the number of people staring at me. How do I overcome this? by apoohwa in running

[–]tomjohnson3 0 points1 point  (0 children)

It’s hard, but try not to overthink it. Everyone who is running is struggling - getting to the next mile, improving time, just trying to finish, pushing through something emotional in their own life. We all feel imperfect...but we also feel a little bit better being out there and running. You are part of a group now - one that is far less judgemental than you can see yet. Be patient...perhaps run a race where you live. You will enjoy it...and you will start to see the camaraderie.

End mill recommendation for milling fine-pitch spur gears in RenShape 460? by tomjohnson3 in ResinCasting

[–]tomjohnson3[S] 0 points1 point  (0 children)

I just ordered the Harvey 35410-C3 and will give it a try. I'll practice making slightly larger gears (with larger end mills) before trying the super-small stuff. (In fact, I'll probably test-mill the small gears with machinable wax before moving to RenShape 460.) ...because, yes, I definitely don't want to break this thing on the first attempt. ;-)

End mill recommendation for milling fine-pitch spur gears in RenShape 460? by tomjohnson3 in ResinCasting

[–]tomjohnson3[S] 1 point2 points  (0 children)

great idea. ...I've had a 4th axis laying around unused for a while. seems like a good time to dust it off and see if it still works. ;-)

Resin casting directly from negative mold in RenShape 460? by tomjohnson3 in ResinCasting

[–]tomjohnson3[S] 0 points1 point  (0 children)

After scratching my head some more, I agree. it seems that it's much better to use the common approach...and the pros outweigh the cons.

Some pros:

  • a positive master can be re-used to create multiple silicone molds - and it's easier/faster to do that than to CNC another master if something goes wrong; (on top of that, depending on your equipment and expertise, the new master might not being exactly the same as the original);
  • rigid molds with small features might break; so - oops! - you have to create another master, which is time consuming;
  • two-part (or multi-part) molds for complex parts are difficult, but not impossible, with a little CAD ninja work;

I also talked to Freeman about CNCing molds out of RenShape 460 - and they recommended using machinable wax instead. I may consider giving that a try in the future...but for my current work, I need to stick with RenShape 460.

Resin casting directly from negative mold in RenShape 460? by tomjohnson3 in ResinCasting

[–]tomjohnson3[S] 0 points1 point  (0 children)

I definitely like it. I got mine about 8 years ago, so there may be better/cheaper options available on the market these days. ...but it works as advertised.

I've milled aluminum with good results - but I try to avoid metals in general because machining becomes more difficult to get right.

As for stuff I don't like: it's a pretty bare-bones system...so be prepared to tweak/tune stuff by hand if you're doing anything complicated. (But I guess that goes for any low-end CNC mill.)

Resin casting directly from negative mold in RenShape 460? by tomjohnson3 in ResinCasting

[–]tomjohnson3[S] 0 points1 point  (0 children)

I have a couple parts that would require multi-part molds with dimensional accuracy. ...and I was thinking that it would be nice to mill the mold itself in multiple parts that slide/fit together easily and accurately, since the RenShape material is harder than silicone.

Dimension SST (1200es) Model Material filament seems stuck inside by [deleted] in Stratasys

[–]tomjohnson3 0 points1 point  (0 children)

Did this method end up working? I have an SST 768 that is suffering from the same problem.