# Building a Bolger Bobcat (Payson Tiny Cat) catboat from CAD on up **URL:** \ **Category:** Projects\ **Created:** [January 10, 2018, 9:31pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851 "2018-01-10T21:31:28Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Sonny\_Lacey](https://avatars.discourse-cdn.com/v4/letter/s/e480ec/32.png) [@Sonny\_Lacey](https://forums.maslowcnc.com/u/Sonny_Lacey)\ **Post date:** [January 10, 2018, 9:31pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/1 "2018-01-10T21:31:28Z")
Got my Maslow in about a month ago and set 'er up, went through calibration(s), and started in on a few small ‘starter’ projects. Quickly, however, I decided to start in on a Bolger Bobcat sailboat: ![IMG_20171213_112448](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/2X/6/657164c4a849ae80539ebf5e54e2e83af95bdbcd.jpg) I’ve built small, wooden ‘stitch and glue’ plywood boats before, and this was the first time I wanted to go from fully-digitized plans in CAD to CNC milling. I recreated the blueprints in AutoCAD Fusion 360, going painstakingly over each measurement and offset to get virtual panels. I then created puzzle joints from freehand splines to ‘cut’ the virtual panels to lay them out on 4x8 plywood sheets. Taking the plans to g-code in Fusion 360 was not too hard, thanks to the video tutorials out on the Web. From there, it was a matter of cutting the frames, the side, bottom and bilge panels and the other bits and pieces. ---
**Author:** ![Sonny\_Lacey](https://avatars.discourse-cdn.com/v4/letter/s/e480ec/32.png) [@Sonny\_Lacey](https://forums.maslowcnc.com/u/Sonny_Lacey)\ **Post date:** [January 10, 2018, 9:35pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/2 "2018-01-10T21:35:07Z")
I’ve built small, wooden (plywood) boats before, but this was where I wanted to take the full plans, digitize them (via design parameters within AutoCAD Fusion 360) and go from there to CNC milling. ![Fusion360_bobcatPanelLayouts](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/2X/1/1dc0806e7e97d4623c7adef3c5143c3d346fe797.PNG) ![Fusion360_bobcatBilgePanels](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/2X/9/9984bcd73bf4704c7786416f6f87f2c5a7ad7fcc.PNG) ![Fusion360_bobcatBilgePanels2](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/2X/e/eb14b38fad2565cc7613053e1b1aed1ccb47a124.PNG) Then came the cutting…: ![IMG_20180102_135607](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/2X/2/2bba4991a8e38192718f0376eacfceef09e4e1ce.jpg) The Bobcat is now down in the shop, taking shape, with epoxy/sawdust putty in the seams now awaiting sanding and then taping with fiberglass strips: ![IMG_20180101_144831](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/2X/4/4cd1134f9b38a4899b13b0d8ba0401c7d47227af.jpg) ![IMG_20180104_173615](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/2X/1/1f3ab883fd253d1af6c260948f64d148f525edaa.jpg) ---
**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\ **Post date:** [January 10, 2018, 9:35pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/3 "2018-01-10T21:35:51Z")
Oh my god…oh my god…oh my god!! I don’t even know that to say…this is amazing!!! ---
**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\ **Post date:** [January 10, 2018, 9:36pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/4 "2018-01-10T21:36:01Z")
I am literally speechless ---
**Author:** ![akamcfly](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/akamcfly/32/2086_2.png) [@akamcfly](https://forums.maslowcnc.com/u/akamcfly)\ **Post date:** [January 10, 2018, 9:36pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/5 "2018-01-10T21:36:12Z")
![](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/2X/4/49596d3f2498314d8fb3e76037542707c8657a57.jpg) ---
**Author:** ![akamcfly](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/akamcfly/32/2086_2.png) [@akamcfly](https://forums.maslowcnc.com/u/akamcfly)\ **Post date:** [January 10, 2018, 9:39pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/6 "2018-01-10T21:39:52Z")
A stitch and glue something is on my Maslow list. You have made my day! 😃 ---
**Author:** ![Sonny\_Lacey](https://avatars.discourse-cdn.com/v4/letter/s/e480ec/32.png) [@Sonny\_Lacey](https://forums.maslowcnc.com/u/Sonny_Lacey)\ **Post date:** [January 10, 2018, 9:40pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/7 "2018-01-10T21:40:58Z")
Thanks, all! I will keep you updated. Woops. Forgot to add a few pics for the ‘blueprint’ to digital conversion process! Here we go: ![IMG_20171213_100129](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/2X/e/eec8398c649b68795f3feda9d55689e3b318ca99.jpg) ![IMG_20171216_141322](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/2X/4/4fb3bbfd88490b6d0a138fa5ce480fb763edcd77.jpg) ---
**Author:** ![Sonny\_Lacey](https://avatars.discourse-cdn.com/v4/letter/s/e480ec/32.png) [@Sonny\_Lacey](https://forums.maslowcnc.com/u/Sonny_Lacey)\ **Post date:** [January 10, 2018, 9:42pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/8 "2018-01-10T21:42:20Z")
I have done quite a few stitch and glue projects: a 17’ sailboat, a few kayaks, a stand up paddleboard, and now this 12’ catboat. I, personally, love the method! I cannot say enough about modern epoxy and also about just using plain 'ol fine sawdust from your dust collector for making the seam putty. ---
**Author:** ![Bee](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bee/32/2160_2.png) [@Bee](https://forums.maslowcnc.com/u/Bee)\ **Post date:** [January 10, 2018, 9:46pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/9 "2018-01-10T21:46:42Z")
The boat build reminds me or Leroy Gibbs in NCIS. At least you don’t have to take out a wall to get the boat out. 🙂 Great work! I want pictures of it on the water. Thank you ---
**Author:** ![Sonny\_Lacey](https://avatars.discourse-cdn.com/v4/letter/s/e480ec/32.png) [@Sonny\_Lacey](https://forums.maslowcnc.com/u/Sonny_Lacey)\ **Post date:** [January 10, 2018, 9:47pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/10 "2018-01-10T21:47:55Z")
…already took out part of the wall for a previous boat…! 😉 ---
**Author:** ![Bee](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bee/32/2160_2.png) [@Bee](https://forums.maslowcnc.com/u/Bee)\ **Post date:** [January 10, 2018, 9:50pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/11 "2018-01-10T21:50:39Z")
You rock! How much do you estimate the materials for the build? I’ve been out on a tall ship and done a bit of sailing with a crew. I was thinking I might want to learn to sail a small boat. This might fit the bill. Thank you ---
**Author:** ![Bee](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bee/32/2160_2.png) [@Bee](https://forums.maslowcnc.com/u/Bee)\ **Post date:** [January 10, 2018, 9:53pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/12 "2018-01-10T21:53:06Z")
I’m going to jump the gun - Sonny do you mind if the pictures are used in one of the Bi-weekly updates newsletter? Thank you ---
**Author:** ![madgrizzle](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/madgrizzle/32/1372_2.png) [@madgrizzle](https://forums.maslowcnc.com/u/madgrizzle)\ **Post date:** [January 10, 2018, 9:55pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/13 "2018-01-10T21:55:18Z")
As the late, great Chris Farley would say… ![download](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/2X/9/971cdf88dd1febe22e0c28f6b3b01d196103b6de.jpg) ---
**Author:** ![madgrizzle](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/madgrizzle/32/1372_2.png) [@madgrizzle](https://forums.maslowcnc.com/u/madgrizzle)\ **Post date:** [January 10, 2018, 9:56pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/14 "2018-01-10T21:56:37Z")
I hope the other side of the room has garage door on it 🙂 ---
**Author:** ![Gero](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/gero/32/17487_2.png) [@Gero](https://forums.maslowcnc.com/u/Gero)\ **Post date:** [January 10, 2018, 10:21pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/15 "2018-01-10T22:21:45Z")
Amazing ! Crazy Good ! Keep it up ! ---
**Author:** ![dlang](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/dlang/32/859_2.png) [@dlang](https://forums.maslowcnc.com/u/dlang)\ **Post date:** [January 10, 2018, 11:11pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/16 "2018-01-10T23:11:14Z")
This is a large project using the full cutting size of the maslow, exactly the sort of thing it’s designed for. What sort of errors are you seeing from your cuts? This is a perfect example of perfect being the enemy of good enough as so many of us are worrying about the accuracy, while @Sonny_Lacey is not worrying about it, he’s just building it 🙂 Especially after reading the one blog post about a commercial company doing the same sort of thing (with three or more generations of CNC machines, the last of which is expensive enough that he comments that the vaccum hold-down motor costs as much as a decent car), which said that they go through multiple router bits a day and find that the accuracy as the bit deteriorates is enough to affect the fit ---
**Author:** ![krkeegan](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/krkeegan/32/17443_2.png) [@krkeegan](https://forums.maslowcnc.com/u/krkeegan)\ **Post date:** [January 10, 2018, 11:13pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/17 "2018-01-10T23:13:35Z")
Is the door big enough to get this out? 😛 This is really awesome, glad it is working out for you. ---
**Author:** ![Bryan\_Pollock](https://avatars.discourse-cdn.com/v4/letter/b/f0a364/32.png) [@Bryan\_Pollock](https://forums.maslowcnc.com/u/Bryan_Pollock)\ **Post date:** [January 10, 2018, 11:33pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/18 "2018-01-10T23:33:16Z")
Amazing work, it gives me hope my plan for a teardrop trailer won’t be an issue. ---
**Author:** ![akamcfly](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/akamcfly/32/2086_2.png) [@akamcfly](https://forums.maslowcnc.com/u/akamcfly)\ **Post date:** [January 10, 2018, 11:39pm UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/19 "2018-01-10T23:39:38Z")
> [@dlang](#): > > This is a perfect example of perfect being the enemy of good enough as so many of us are worrying about the accuracy, while @Sonny_Lacey is not worrying about it, he’s just building it 🙂 ![](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/2X/3/381063d46d8d5ebce9bdd6d7c48553d0f1e52eef.jpg) ---
**Author:** ![Sonny\_Lacey](https://avatars.discourse-cdn.com/v4/letter/s/e480ec/32.png) [@Sonny\_Lacey](https://forums.maslowcnc.com/u/Sonny_Lacey)\ **Post date:** [January 11, 2018, 1:43am UTC](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851/20 "2018-01-11T01:43:24Z")
Sure thing @Bee go on and use any pics you like. As for a materials cost, it’d be something like: - plans: $100 - epoxy and cloth: $400 - plywood (marine grade Okoume shipped down from Boston): $500 - spruce, fir for spars: $200 - various hardwoods: $100 - brass sheetmetal and various fittings: $200 - sail (made by Doug Fowler of Ithaca, NY who is one of the best): $750 [alternatively, Sailrite has kits for around $350 if you want to do that bit yourself, but Doug did my last set of sails and I like to support the thing he is good at] I’m also using lots of scrap pieces here and there from other old projects, etc. Hope that helps. [Next page](https://forums.maslowcnc.com/t/building-a-bolger-bobcat-payson-tiny-cat-catboat-from-cad-on-up/1851.md?page=2)