ob2

Does anyone happen to know the exact internal width of the cargo bay in the back of the Thor Majestic 28A RVs rented by the likes of Cruise America?

I want to cut my shade posts as close to 8' as I can without them being over sized while laying flat. The published width of the vehicle is 8'4" and the cargo bay runs the entire width in the back. The Google Super AI claims "~96 inches" which sounds about right. I just don't know how thick the doors really are or if I'm really getting the full 96 inches internally. I'm thinking 8' will work, but it will be close.

If anyone has any experience with this, it would be much appreciated. Otherwise I'll make the trip down and try to measure it. Or

Partly out of curiosity, partly because it might actually be useful, I am trying to build a RAG system for 5 technical operating manuals (PDFs) that have a total of about 3500 pages. The manuals are broken down into sections and nested subsections, and contain tables, images, and line-item operating procedures.

Mostly by asking ChatGPT "How do I do this", I am currently:

• Parsing the PDFs using pymupdf4llm
• Chunking the hell out of each section on a section basis, both "as-is" and also cleaned (mostly removing newlines and some markdown), sentence basis, and 1000 and 500 character chunk basis with overlaps, each with and without prefixed section titles (for context.) I realize this is pr

I have an old steel frame Bianchi Brava which I've had for decades, yes it's heavy and low-end and obsolete but I really liked riding it. The rear shifter (Shimano Sora) got damaged when a friend crashed it some time back, so it doesn't shift very well anymore. I don't think it's the derailleur so much as the shifter on the handlebar. I'd like to get it up and running with as little money as possible. Any recommendations on how to replace the rear shifter, and what to replace it with, and where to buy this stuff on a budget? Obviously doesn't need to be latest generation gear or anything close to it.

Strategies strategies strategies...

Hope this doesn't violate sub rules, but I need some prototypes made and I don't have the equipment or skills to make them. Probably will need at the least a planer and CNC router. Approximate dimensions 24" x 3" x 1" made from Poplar. If interested DM me! I can provide drawings and .step models.

I’m not sure if this is the right place to ask but I’m looking for a freelance machinist with a small shop or even a garage shop that wants to take on a small and relatively easy job I need done. Basic milling on 6061 aluminum stock, nothing more than pocketing, drill/tapping (M3), and some 45 degree chamfering. The pieces range from 4 inch x 8.5 inch x 3/8 inch stock to smaller pieces of 1/4 inch x 1.5 inch bar stock. It’s for mold making so nothing too fancy. Tolerances within 5 mil are generally fine.

I’ve been making what I need myself with a comically inadequate bench-top cnc mill, but I could really use someone with proper equipment and who actually knows what they’re doing to make th

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https://i.redd.it/3xumaiy82bl21.jpg

Well after about a year of prototyping and working out the manufacturing kinks, the new CrimpWerks Quick-Change (QC) fingerboards are finally ready!

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These are based off the original concept but with the added capability of being able to “clip on” the holds without the need for tools. You can quickly and easily flip over or change out holds on the fly within a second or two. They weigh 6.5oz with a hold attached and are only a bit larger than a full sized carabiner.

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Right now I’m offering 4 different holds with 11 different surfaces:

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• 18mm/10mm/8mm straight edges (Green)
• 14mm/8mm/6mm straight ed

I'm going to be submitting an RFQ on a couple parts soon, and (as usual) keeping costs LOW are important. As a part of tweaking final designs, I'm trying to decide how much play should exist between interfacing moving parts.

Once upon a time 0.005" was considered "standard" tolerance. It would seem with better machines and technology this has improved?

At what point tolerance-wise does cost really start to go up?

The part in question is to be made out of 6061, and is about 60mm x 20mm x 5mm and is being designed to be cut primarily with an 1/8" endmill (inside corner radius of some pockets.)

Thanks!

(cross posted to r/machinists)

I'm going to be submitting an RFQ on a couple parts soon, and (as usual) keeping costs LOW are important. As a part of tweaking final designs, I'm trying to decide how much play should exist between interfacing moving parts.

Once upon a time 0.005" was considered "standard" tolerance. It would seem with better machines and technology this has improved?

At what point tolerance-wise does cost really start to go up?

The part in question is to be made out of 6061, and is about 60mm x 20mm x 5mm and is being designed to be cut primarily with an 1/8" endmill (inside corner radius of some pockets.)

Thanks!