Thanks for the instructions Brian. Sent from my iPhone
> On Apr 3, 2022, at 5:58 AM, Mike Endacott <[email protected]> wrote: > > > Nice set of instructions Brian. > >> On Sun, 3 Apr 2022 at 06:58, Brian <[email protected]> wrote: >> The bottom of my machine is stainless steel, if yours is the same here Are >> some tips you should abide by: >> >> Regular HSS drill bits will work, but ones designed for hard metals are >> easier and more likely to work. For budget hard metal bits I find the >> Milwaukee hard metal bits to be very good, they can be gotten at many >> hardware or trade supply stores, and you will likely find a suitable size >> for sale as a single bit saving the need to buy a pack. If you aren’t very >> good at drilling, buy a second bit. >> If you do buy a set it is recommended to start with a small hole then work >> up to the actual required size giving the metal, and the bit, time to cool >> in between drilling. But since you shouldn’t need a very big hole to mount a >> solid state relay, you can probably just go right to the correct size. >> Stainless steel hardens if it gets hot, so lubricate the bit and the metal >> where you are drilling from time to time, stop if it starts to smoke, this >> is a good indication that things are getting too hot. Motor oil works well, >> WD-40 works okay, but even a high temp cooking oil like vegetable oil will >> work if you’re concerned about non food safe oil. A little bit of smoke is >> normal, especially if it looks like it is actually coming from the metal >> being removed. >> Make sure when drilling to apply moderate to high pressure, and keep the >> drill speed low. Like really low. Like you’re gonna think “surely this is >> too slow, slower than he meant”, and that’s probably about right.. I promise >> with stainless steel, slow is actually fast. If the stainless gets hot it >> will work harden, and then even the best bits will just get chewed up >> trying to get through the work piece. >> Make sure when drilling you maintain good straight contact with the work >> piece. Do you’re best to keep the drill bit perpendicular to the piece being >> drilled, but most importantly once you start drilling, do your best to keep >> the drill straight. The hard metal bits like to chip if you change the angle >> while drilling. >> Before you begin drilling, use a screw or a center punch with a good sharp >> point, and place the tip where you want the center of the hole to be, give >> it one good whack with a good size hammer. This should give you a little >> indent, this will make getting the hole started much easier, and prevent the >> bit from walking. >> You’ll know you’re doing everything right when the full surface of cutting >> edge of the drill bit makes contact with the work piece, you should see >> strands of metal coming out, not small chips. If you do it all really well >> you’ll get long continuous ribbons of stainless steel. >> When the drill bit breaks through to the other side it is VERY likely to >> bind up, be ready for this, you can usually hear it about to happen. The >> drill will jerk and try to twist when this happens. If you start small and >> work you’re way up in size it reduces the severity of this. >> Placing/attaching a piece of wood behind the back of the work piece will >> help to prevent the case from bending as you apply pressure, it will also >> likely give you a cleaner exit hole, and reduce the chance of the drill >> binding up. >> It really isn’t that hard to drill stainless, just a little care is required >> for good results, don’t be dissuaded by all of my notes above, you can >> totally do it. I am the operations/maintenance manager at a brewery so I >> drill a lot of stainless. >> >> Don’t forget to apply thermal grease between the SSR and base of the >> machine. Without it the SSR will fail prematurely, as it will generate >> enough heat to cook itself. >> >> Best of luck! >> Brian >> >>> On Saturday, April 2, 2022 at 7:26:56 PM UTC-4 Andre wrote: >>> Hi group, I am in the process of PID kit installation into my Brewtus 2. >>> You need to drill holes for static relay and I wonder if I need a special >>> kind of drill bit for the thick steel bottom of the machine? Any issues and >>> tips with that part? Not exactly sure what diameter too. Thanks. >>> >>> Sent from my iPhone >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Brewtus" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/brewtus/18729bf9-1e2a-4630-b671-8c74686b9cb1n%40googlegroups.com. > > > -- > Mike > > -- > You received this message because you are subscribed to the Google Groups > "Brewtus" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/brewtus/CAOUszRaggRW4KtPeT13dNOLVykBk07D7ZsSZ2qrx5yP7S%2Bx_4g%40mail.gmail.com. -- You received this message because you are subscribed to the Google Groups "Brewtus" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. 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