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Post by GTS on Sept 26, 2018 22:01:12 GMT -7
Thanks for the info! There are 1.75mm end mill bits out there that would work as they are .0689 diameter. What size did you rout the guide slot? Good tip on the 1.75mm bit! I had tested with .066", .068" and .069" and preferred the .069 for notably easier install so would think the 1.75mm would be the ticket.
I routed the guide slot at .0625" wide x .2" deep.
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Post by GTS on Sept 26, 2018 23:03:55 GMT -7
The other 2 track pieces got routed today plus a couple pieces for the pit area.
Will be waiting on the finishing up of the HVAC installation in the basement before proceeding much further. Time to kick back and enjoy the Bear Creek racing this weekend  . |
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Post by kiwidave on Sept 26, 2018 23:55:28 GMT -7
Great stuff. Thanks for sharing.
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Post by AJR on Sept 27, 2018 2:52:42 GMT -7
Great craftsmanship Gale! This is the kind of stuff I really enjoy come together! Thank you for posting.
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Post by gnome on Sept 27, 2018 5:35:42 GMT -7
Beautiful work as always, was there a reason you went with a painted surface over the pvc you used on the other one ,what is your thoughts on the bolth. Looks like a t jet made first on track
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Post by cozee on Sept 27, 2018 5:37:24 GMT -7
Thanks for the info! There are 1.75mm end mill bits out there that would work as they are .0689 diameter. What size did you rout the guide slot? Good tip on the 1.75mm bit! I had tested with .066", .068" and .069" and preferred the .069 for notably easier install so would think the 1.75mm would be the ticket.
I routed the guide slot at .0625" wide x .2" deep.
All thanks are yours. I have built a couple 1/24th scale tracks and always wanted to do an HO track but never have. Pretty sure I am going to rout my own strip. I need to decide if I want to use PVC or go with a Masonite surface. I have seen a couple road course tracks routed out of Corian! |
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Post by GTS on Sept 27, 2018 7:35:31 GMT -7
Beautiful work as always, was there a reason you went with a painted surface over the pvc you used on the other one ,what is your thoughts on the bolth. Looks like a t jet made first on track Thanks KiwiDave & Jeff for the input and encouragement! Always appreciated! Thanks gnome! Hmmmm, thoughts on the two, eh? Have wrestled with the choice for the last month. Wasn't quite a coin toss but almost, lol. If I were to go with the PVC, I woulda' used 6mil (1/4") thick. In this area, MDF plus paint was less than $40, PVC sheet is less than $75. Not really a determining factor there. I played around with both when testing & figuring the rail install. Both route really easy, IMO. Installing the lock wire, for me, was tedious to say the least. I would definitely consider the PVC if for some reason the MDF doesn't work out but the main reason I chose to go with the MDF was the softness of the PVC when trying to install the rail. If I knew what I was doing it would help but found the MDF to be more consistent maintaining a rail height. Thru varying pressure pressing the rail in to the PVC, the rail height would vary as much as 3 or 4 thousands. Hope that all makes sense  . |
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Post by GTS on Sept 27, 2018 7:37:14 GMT -7
Good tip on the 1.75mm bit! I had tested with .066", .068" and .069" and preferred the .069 for notably easier install so would think the 1.75mm would be the ticket.
I routed the guide slot at .0625" wide x .2" deep.
All thanks are yours. I have built a couple 1/24th scale tracks and always wanted to do an HO track but never have. Pretty sure I am going to rout my own strip. I need to decide if I want to use PVC or go with a Masonite surface. I have seen a couple road course tracks routed out of Corian! Hope your build goes well and you are able to share your experiences!
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Post by cozee on Sept 27, 2018 7:45:16 GMT -7
Thanks for the info! There are 1.75mm end mill bits out there that would work as they are .0689 diameter. What size did you rout the guide slot? Good tip on the 1.75mm bit! I had tested with .066", .068" and .069" and preferred the .069 for notably easier install so would think the 1.75mm would be the ticket.
I routed the guide slot at .0625" wide x .2" deep.
So if I am understanding correctly, .020" flatwire, .050" lock, in a .069" slot, you're using .001" for lock compression, correct? Are you using any adhesives in combination with the lock? I am tossing around ideas. Thinking of possibly fabbing a jig for one of my table saws and cutting slots with a thin kerf blade. |
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Post by GTS on Sept 27, 2018 8:19:26 GMT -7
Good tip on the 1.75mm bit! I had tested with .066", .068" and .069" and preferred the .069 for notably easier install so would think the 1.75mm would be the ticket.
I routed the guide slot at .0625" wide x .2" deep.
So if I am understanding correctly, .020" flatwire, .050" lock, in a .069" slot, you're using .001" for lock compression, correct? Are you using any adhesives in combination with the lock? I am tossing around ideas. Thinking of possibly fabbing a jig for one of my table saws and cutting slots with a thin kerf blade. Yeah, I know, the numbers don't make sense . I would highly recommend doing some testing to see what numbers & variables are going to work for you. I'm just sharing what wound up working in my situation and I totally realize, and hope others do too, that none of this is carved in stone and that a lot of variables can come into play. Test, test, test is what I try to do. As far as adhesive goes; I haven't seen the need yet (trying to avoid it if possible) but if the need arises, I'm hoping that a 50/50 mix of Elmers yellow glue and H2O will be enough to solve any issues. The hope is that it would allow a tiny bit of swelling in the MDF plus a bit of adhesion. A 50/50 mix comes out of a vape juice bottle pretty controllably and is easy clean up. If I absolutely have to, I'll consider a CA glue but I'm terrible with that stuff, lol.
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Post by cozee on Sept 27, 2018 8:43:46 GMT -7
So if I am understanding correctly, .020" flatwire, .050" lock, in a .069" slot, you're using .001" for lock compression, correct? Are you using any adhesives in combination with the lock? I am tossing around ideas. Thinking of possibly fabbing a jig for one of my table saws and cutting slots with a thin kerf blade. Yeah, I know, the numbers don't make sense . I would highly recommend doing some testing to see what numbers & variables are going to work for you. I'm just sharing what wound up working in my situation and I totally realize, and hope others do too, that none of this is carved in stone and that a lot of variables can come into play. Test, test, test is what I try to do. As far as adhesive goes; I haven't seen the need yet (trying to avoid it if possible) but if the need arises, I'm hoping that a 50/50 mix of Elmers yellow glue and H2O will be enough to solve any issues. The hope is that it would allow a tiny bit of swelling in the MDF plus a bit of adhesion. A 50/50 mix comes out of a vape juice bottle pretty controllably and is easy clean up. If I absolutely have to, I'll consider a CA glue but I'm terrible with that stuff, lol.
Oh I understand. Just using your numbers as a jump off point for my thinking. I said CA as a reference. Personally, I prefer epoxy for this application  !! I do though use a lot of CA when turning pens. It makes a great finish! |
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Post by GTS on Sept 27, 2018 9:10:01 GMT -7
Laid the pit pieces in to get a look see. Plan to put a little rectangular building where the monitor stand and cables are. Probably be a restroom building. Prefer that over porta-potties . |
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Post by GTS on Oct 8, 2018 17:17:58 GMT -7
Well, today is a good day at the speedway! Had the final inspection on the HVAC installation and it passed with flying colors. So, I can move forward (finally) with the building of the drag track . |
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Post by GTS on Oct 9, 2018 13:06:35 GMT -7
Got two more 8' long bases attached to the main table this morning. Laid the track pieces on for a visual  . Pics are views each direction.
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Post by dave632 on Oct 9, 2018 13:43:56 GMT -7
Coming along nicely.
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!! I do though use a lot of CA when turning pens. It makes a great finish! 
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