hon30critterI believe that the 1 3/4" hole is recommended for mounting in plywood. The instructions say that a 1 1/2" hole is recommended for foam.
I missed that important detail.
I guess they want an interference press-fit in foam. That is most likely a good practice.
-Kevin
Living the dream.
SeeYou190The instructions with my Rapido Railcrew Uncouplers said to use a 1-3/4" hole saw. -Kevin
Hi Kevin,
I believe that the 1 3/4" hole is recommended for mounting in plywood. The instructions say that a 1 1/2" hole is recommended for foam.
Dave
I'm just a dude with a bad back having a lot of fun with model trains, and finally building a layout!
PC101When hole sawing through Foam Board, turn the hole saw by hand backwards so the teeth will not tear out tiny pieces of foam. This backwards turning makes a nicer/smoother hole in the foam.
Yes, great advice.
PC101While we are at it, lets drill the recomended hole size of 1-1/2'' (38mm) in foam board and see how it goes to push-fit in the ON -OFF REMOTE UNCOUPLER.
The instructions with my Rapido Railcrew Uncouplers said to use a 1-3/4" hole saw.
THIS MAY BE OLD NEWS AND POSTED ELSE WERE BUT. I just looked at the numbers.
You guys may want to measure the RAPIDO SWITCH MACHINE before you use/buy hole saws or any saw/drill.
For the installation in foam board the instruction show to drill a 7/8'' (38mm) hole. Now my hole saw is marked 7/8'' and 22mm. I'd like to see you push the SWITCH MACHINE down in to a 7/8'' hole made in foam board.
Again the instructions call for a 1-1/8'' (45mm) hole drilled in wooden benchwork, my hole saw is marked 1-1/8'' and 29mm.
Something is not right.
Looks to me like a 1'' (25mm) hole in foam board would be a better push-fit choice for the SWITCH MACHINE.
Please strighten me out if I'm wrong. Or better yet, go drill some holes.
While we are at it, lets drill the recomended hole size of 1-1/2'' (38mm) in foam board and see how it goes to push-fit in the ON -OFF REMOTE UNCOUPLER.
doctorwayne BATMAN The only thing I don't like about the stud finding part is, it goes off every time I walk in the room.Laugh As my daughters would say, "All that and a bag of chips, too!" Wayne
BATMAN The only thing I don't like about the stud finding part is, it goes off every time I walk in the room.Laugh
As my daughters would say, "All that and a bag of chips, too!"
Wayne
My aged father called up about four years ago and breathlessly asked, "Do you have a stud finder?"
"Yeah, I married one." There was a pause, and then some chuckling.
For the Hole saw crew,
When hole sawing through Foam Board, turn the hole saw by hand backwards so the teeth will not tear out tiny pieces of foam. This backwards turning makes a nicer/smoother hole in the foam.
I know that a lot of the holes I cut in wood and metal will depend on the tooth count, the material I need to go through, what could be inbedded in it, how fast or slow the hole needs to be cut and what the hole needs to look like (smooth or rough) when done.
Brent
"All of the world's problems are the result of the difference between how we think and how the world works."
BATMANThe only thing I don't like about the stud finding part is, it goes off every time I walk in the room.Laugh
Lastspikemike Anyone who can drill a good hole centered on a joint between plywood sheets using a spade bit has my admiration.
Anyone who can drill a good hole centered on a joint between plywood sheets using a spade bit has my admiration.
How thick is the plywood?
Is there a stud under the joint?
How big is the hole/bit?
What is the quality/grade of the plywood?
How tight is the joint?
How Sharpe is the bit?
How perfect does the hole have to be?
SeeYou190I would be extremely concerned about hitting a nail or screw on any project in an assembled layout section.
A good quality stud finder will also show you where the nails, screws, and wire will be. Like the ad says check before you dig, or in this case, before you drill.
When the kids bugged out of University because of covid, they were writing exams online. I decided to hardwire the house to make it smart so they could plug right in for exams as a wireless glitch could be disastrous. No drywall was damaged in the process. I used spade bits on very long flex shafts to drill holes via cold air returns, heat registers, and removed molding. I always ran the stud finder looking for metal and wire along the wall before the drilling started. The only thing I don't like about the stud finding part is, it goes off every time I walk in the room.
I certainly can agree with you on that, Kevin. A lot of the area where the hole-making was done was not on a plywood-topped area. The track was on cut-out 3/4" plywood sub-roadbed on short risers, but I had also added plywood platforms for some structures,and also risers for supporting the Durabond patching-plaster-on-screen-ground-contours, most of it screwed in-place, then covered with scenic material. I had to do all of the drilling from the top, as it was the only way to accurately place the holes for the turnout motors.I'd be embarrassed to show what the underside of the layout looks like in that area.
I'm not sure where this one is located, but it was one of the easy ones to do...
PC101Here's what I do, find an O - ring that fits snug over the threads, now when you screw the hole saw down on the arbor the O - ring will be between the hole saw and the arbor's base. You should find the hole saw will be easy to unscrew when it comes time to change hole saws.
Mike
Using a spade bit and hitting a nail does not sound like it would be a good day. I cannot say, as far as I know I have never drilled through a nail with a spade bit, forstner bit, or hole saw.
I would be extremely concerned about hitting a nail or screw on any project in an assembled layout section.
I dunno, Kevin...the instructions which came with mine recommended a 1 1/8" spade bit. The screws and nails which mine encountered would have destroyed a hole saw pretty quickly. Had there been no such obstacles, the hole saw might have produced less detritus (or at least not have spread it around so much) but I usually use only my shop vac for layout cleaning anyway.
A forstner bit is a bad idea. Not as bad as a spade bit, but still bad.
A good hole saw, as recommended by Rapido is the correct tool.
One try, and you will see why. Be sure to post pictures!
My layout has 3/4'' plywood under 1/2'' and maybe up to 2'' blue foam board and maybe or maybe not cork on top of the blue foam board.
So with Rapido's recommended way, a certain size hole saw for going through wood benchwork and another certain size hole saw for going through foam board. Now with using the SWITCH or UNCOUPLING machine I would need four hole saws and two arbors by using Rapido's recommendation.
Here is what I do, I use the wood benchwork recommended size hole saw that is larger then the foam board hole saw, to go clean up through wood and foam and maybe cork and up to the ties for the UNCOUPLING machine and down through it all for the SWITCH machine. The size of the hole saw for wood bench work that is recommended by RAPIDO for each type of RAPIDO machine.
Now take a piece of thin string and wrap it three times around which ever machine you are installing. Now measure that string and cut a piece of electrical tape as long as the string and wrap the tape around the machine. There now, the machine will be a snug/tight fit in the foam and I did not have to buy four different hole saws. If the machine is too tight to go through the wood hole, use just one or two wraps of electrical tape.
SeeYou190 Helpful people that have something to contribute share photographs. -Kevin
Helpful people that have something to contribute share photographs.
Here's one for the hole saw guys,
Sometimes, well most of the times the hole saw will get very tight on the threaded arbor and takes some doing to get it loose.
Here's what I do, find an O-ring that fits snug over the threads, now when you screw the hole saw down on the arbor the O-ring will be between the hole saw and the arbor's base. You should find the hole saw will be easy to unscrew when it comes time to change hole saws.
The O-ring I use is 1/2''OD x 3/8'' ID x 1/16'' thick.
LastspikemikeThe Forstner bit would be the best tool to use but I don't think they come in inch sizes.
Yes, they do.
LastspikemikeFor drilling close to finished work an old fashioned brace and bit gives very good control over the process.
I also like using a brace and bit for making very clean cuts. I'm not real skilled in using tools. I have trouble using a spade bit in a power drill when I need a very clean cut. Especially on plywood, I have trouble ripping and chipping the top layer of wood. The brace and bit seems to allow very good control if using a spade bit.
I like Forstner bits, but I'm reluctant to spend the money when I know I will use it only a couple of times. If I was planning a doing on bunch of work, I would buy them.
York1 John
Lastspikemikean old fashioned brace and bit gives very good control over the process.
I have three that belonged to my Grandfather and use them often. In fact, they are excellent for putting holes through foam.
LastspikemikeOh, and at the time a separate 1 1/8" hole saw "bit" could not be found in our local market, only in kits of several sizes. A spade bit is quite tricky to use if a precisely sized hole is required.
Be it a hole saw or a spade saw I would bet I have more than one copy of any size I would ever need. I have a very well-equipped workshop. I am the guy people come to if they need something cut, drilled, ground.......... My daughter's whole class came to our house for a day, split into six groups of four, and built six 1m high trebuchets.
My neighbours show up with their tractors because my compressor can push 200PSI and can give that extra little bit that theirs can't.
There is nothing tricky about using a spade bit or any other kind of a bit, I prefer a spade bit over a hole saw whenever a choice is presented.
I even have a couple of large boxes of tools that belonged to my Grandfather, he brought trunks full of tools to Canada when he came over from England to be the chief carpenter for the building of the Chateau Lake Louise. I wrote the hotel once and asked if they would like to display some of them and never heard back. They will likely end up in the garbage at some point as antique tools are plentiful on the various marketplaces.
PC101Mr. Dave, go back to the beginning and reread this post please, Mr. Brent is asking about the Switch Machine not the Uncoupling Machine.
Oops!!!! My bad. Senior's moment!
Thank you PC101 for pointing out my error. Also, thanks for the tip about using a hose clamp to control the depth.
Sorry everyone, including doctorwayne.
Honestly, why do you post such garbage? There is no sense to this post what so ever. The correct hole saw is very easy to find.
PC101Hard to find hole saw, I do not think so. I use a LENOX 1-3/4''.
I use the same one!
Hard to find, nope. At least not for anyone with common sense. I think it took me 1.7 seconds to find the one I bought!
-Photograph by Kevin Parson
PC101Anyway back to the Switch machine, Rapido wants a 1-1/8'' hole drilled in wooden benchwork and a 7/8'' hole drilled in foam board.
I have those sizes on-hand in my small Milwaukee Hole-dozer set. I found them already!
Easy-Peazy!
Wow, look... one quick search on HomeDepot.com, boy that was hard!
hon30critter doctorwayne I got four of them at a now-gone hobbyshop for a very good price, due to the closure. Hi Wayne, Without wishing to take anything away from your excellent presentation, Brent was asking about the Rapido Rail Crew uncouplers, not the switch machines. I just wanted to avoid any confusion, particularly with the size of the hole saws which differ from one mechanism to the other, and the location of the holes. You don't need to apologise for getting the two confused. When I ordered my uncouplers Rapido sent me switch machines by mistake, so you are in good company! Apparently their supplier packaged the two different products in identical shipping boxes. Cheers!! Dave
doctorwayne I got four of them at a now-gone hobbyshop for a very good price, due to the closure.
Hi Wayne,
Without wishing to take anything away from your excellent presentation, Brent was asking about the Rapido Rail Crew uncouplers, not the switch machines. I just wanted to avoid any confusion, particularly with the size of the hole saws which differ from one mechanism to the other, and the location of the holes.
You don't need to apologise for getting the two confused. When I ordered my uncouplers Rapido sent me switch machines by mistake, so you are in good company! Apparently their supplier packaged the two different products in identical shipping boxes.
Cheers!!
Mr. Dave, go back to the beginning and reread this post please, Mr. Brent is asking about the Switch Machine not the Uncoupling Machine.
It's two in the morning here, time for me to go to bed, see you all tonight.
doctorwayneI got four of them at a now-gone hobbyshop for a very good price, due to the closure.
I got four of them at a now-gone hobbyshop for a very good price, due to the closure.
Mine were a bit of a job, as I was adding them to four hard-to-reach locations on the lower level of my layout...both a long-ish reach and not much overhead clearance, although whacking my head a few times did keep me from dozing off.
I used a 11/8" spade bit to drill the holes, as recommended by Rapido, and it created a fair bit of sawdust...
This one, shown during installation...
...and in place, was the most difficult, not only due to the reach, but it's also hidden by a structure that can't be removed. I worked on this one, which is near a corner of the layout, from two aisles, and managed to damage some of the runway of the crane that's behind the loco shop (mostly repaired now).
My problem was that this area is not on a plywood tabletop, but with the track mostly on 3/4" plywood roadbed, and many of the nearby structures also sit on platforms of scrap plywood...lots of places with no wood, only plaster on aluminum screen, and lots of wood held in place with screws, which don't get along all that well with drill bits of any type.
This one is the turnout which accesses most of the industries in the town of Lowbanks during the drilling...
...and after the installation...
The other two, shown in-progress earlier, were used for a crossover between the two mainline tracks which pass through Lowbanks and nearby Port Maitland...
I wired these two to be controlled by a single fascia-mounted switch, which would align both for either straight-through operation or crossover.
I used scrap wood and strip styrene to wedge all of the motors in place, then added ballast, a spritzing of "wet" water and some diluted white glue to restore the original landscape.All four are activated by the three switches on the fascia, with power provided by a wall wart. I've had no problems with any of them.
The partial upper level of the layout has made some turnouts on the lower level hard-to-reach, (pretty-well all on-layout turnouts were controlled by Caboose Industries ground throws), but I've been using Blue Point switch controllers to activate the hard-to-reach ones, and am pleased with their performance.All of the staging tracks are still controlled by the Caboose groundthrows, and I have no intention of replacing them, as they're very reliable.
Remember guys, he's talking SWITCH machine not UNCOUPLING machine. Been there done that as noted above.
I guess it's all the same, just different size holes.
doctorwayne has some nice pictures of an install of the Switch machine.
Hi Brent,
I have more faith in Rapido than you do! I bought 24! I haven't installed any yet.
Rapido supplies shim screws to hold the uncouplers in place while they are being tested. Beyond that, they don't say anything about how to secure them in place. I suspect that caulking would be fine. They won't be under any great load.
Note that the use of a 1 3/4" hole saw is specified for installation into plywood. If you are installing them in foam, they suggest a 1 1/2" saw. Also, Rapido supplies a 1/8" pilot to be used with the hole saw so the saw must have an adjustable chuck. I'm not sure if an adjustable chuck is common or not. Certainly the saw size is not an issue.
Hard to find hole saw, I do not think so. I use a LENOX 1-3/4''.
I am adding them to already laid track, now that is a job. Drilling up through 3/4'' plywood and 1/2'' blue board and cork roadbed without ripping up the ties.
The radiator clamps act as a stop (MAKE SURE THE CLAMPS ARE ON THE CORRECT WAY SO THE EXCESS STRAP WILL NOT CATCH THE WOOD). You should hand turn the saw backwards to go through foam board.
The clamp's screw housings (located with the yellow arrows) will cut in and ream a groove in the work piece (wood or foam) if you push the saw to hard with force when the clamps touch the work piece.
Woops again, yes I read "switch machine", but was thinking and showed a uncoupling machine, sorry, long weekend at a Train show.
Anyway back to the Switch machine, Rapido wants a 1-1/8'' hole drilled in wooden benchwork and a 7/8'' hole drilled in foam board.
Now for the Uncoupling machine, Rapido wants a 1-3/4'' drilled in wooden benchwork and a 1-1/2'' hole drilled in foam board.
My above picture of the Uncoupling machine in blue foam board is drilled with a 1-3/4'' hole saw. That way I drill through the 3/4'' plywood with what Rapido wants for the correct sized drill for wooden bench work and then after adjusting the "custom stop" for a 1/2'' plus what ever my cork roadbed is for a deeper hole, I hand turn it the rest of the way through the foam board.